To avoid splashing, rain gauges are positioned 30 cm above the surface of the ground.
What is the reason behind a rain gauge be raised 30cm above the ground?The rainfall may be precisely measured by a rain gauge without any loss from evaporation. It is a tool for measuring the amount of precipitation that falls over a certain area. As a result, it gauges rainfall. A millimeter of measured precipitation is equal to one liter of rainfall per square meter.
Standard rain gauges have a 150–170 cm channeled aperture. They are made to be a straightforward passive collector. For measuring the amount of precipitation, use a graduated measuring glass. To avoid rainwater splashing while measuring rainfall, the rain gauze should be positioned 30 cm above the ground.
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In part C of the lab, when two wires are in series, so that current flows in opposite directions inside them, we see that the wires move ____.
a. towards each other (they attract)
b. away from each other (they repel)
c. both the wires move downwards towards the floor
d. both the wires move upwards towards the ceiling
Answer:
The correct option is B.
away from each other (they repel)
Explanation:
This because when current flows in opposite direction in wire, the electrons in them are at high density or electrons in the wires will be at high density which is as a result of contraction of the length due to relativistic of the length, this make the wires to move away from each other or repel.
Which best describes pitch?
A) the amount of time taken for a longitudinal wave to produce one cycle
B) the number of cycles per second perceived by the human ear
C) the amplitude of a wave when the natural frequency is matched
D) the distance between two corresponding parts of a transverse wave
Answer:
B) the number of cycles per second perceived by the human ear
Explanation:
The best expression that describes pitch is that it is the number of cycles per second perceived by the human ear.
For a wave train, the number of cycles per second is frequency. Whereas the period is the amount of time taken for a longitudinal wave to produce one cycle.
The distance between two corresponding parts of a transverse wave is its wavelength.
A high pitch will correspond to a high frequency of waves perceived. A low pitch corresponds to a low frequency of waves.400JA container with a mass of 5 kg is lifted to a height of 8 m. How much work is done
by the gravitational force?
O 50J
0400)
0-400J
o
zero
O -50)
Answer:
400 J
Explanation:
From the question given above, the following data were obtained:
Mass (m) = 5 kg
Height (h) = 8 m
Workdone (Wd) =?
Workdone by gravitational force is given by the following equation:
Wd = mgh
Where:
Wd => is the Workdone.
m => is the mass of object
g => is the acceleration due to gravity
h => is the height to which the object is located.
With the above formula, we can obtain the workdone as follow:
Mass (m) = 5 kg
Height (h) = 8 m
Acceleration due to gravity (g) = 10 m/s²
Workdone (Wd) =?
Wd = mgh
Wd = 5 × 10 × 8
Wd = 400 J
Thus, the workdone by gravitational force is 400 J
What is the force of gravitational attraction between an object with a mass of 2kg and another that has a mass of 2kg and a distance between them of 2.5 m
Answer:
Explanation:
F = 0.000000000042716 or 4.2688e-11
G = 6.67 × 10−11 Nm2 /kg2
m1 = 2kg
m2 = 2kg
R = 2.5 m ⇒ R^2 = 6.25
F = 6.67 × 10^−11 ( 2 * 2) / 6.25
⇒ F = 6.67 × 10^−11 (4) / 6.25
⇒ F = 2.668e-10 / 6.25
∴ F = 4.2688e-11
A naked, male corpse was found at 8AM on Tuesday, July 9.The air temperature wasalready 26.7˚C (81˚F). The body exhibited some stiffness in the face and eyelids and had a body temperature of 34.4˚C (93.9˚F). Livor mortis was not evident. Approximately how long ago did the man die? Justify your answer. Would clothing on the body have made a difference in determining the actual time of death in this case? Why or why not?
Answer:
x = 9.87 hours ago.
Further explanation is present below.
Explanation:
Data given:
Air Temperature = 26.7°C (81°F)
Body temperature = 34.4°C (93.9°F)
We are given that, Livor mortis was absent. Secondly, The body exhibited some stiffness in the face and eyelids.
So, it can be concluded that, body must have died recently, as Livor mortis was absent plus the presence of stiffness in the face and eyelids. Furthermore,
The normal body temperature = 37°C
Body temperature in our case = 34.4° C
Difference = 37 -34.4 = 2.6°C
And Air temperature = 26.7°C
Which is a very low difference, in addition, it has not acquired the air temperature so, all this evidence certifies that body died recently.
Now, we have to calculate, how recently it died.
Formula:
0.78 . x = difference of body temperature and air temperature
Where, x = number of hours = time required,
0.78 . x = (34.4 - 26.7)
0.78 . x = 7.7
x = 7.7/0.78
x = 9.87 hours ago.
It means that, naked male corpse was died 9.87 hours ago.
Now, we are asked to find out clothing on the body had made a difference or not.
So, Yes it would definitely make a difference. As body would have more warmer than being naked. and it would result in a calculation of a different time of death. (body temperature would have > 34.4°C)
which quantity is a vector quantity?
4.
What is the role of a compressor in an air conditioner?
O It exchanges warm air for cold air and blows it into the room.
O It increases the pressure and temperature of the refrigerant.
O It absorbs heat from the room and blows it outside.
Answer:
b
Explanation:
it compresses hot air turning into cool air almost like a reverse tornado
Answer:
It increases the pressure and temperature of the refrigerant.
Explanation:
The purpose of the compressor is to circulate the refrigerant in the system under pressure, this concentrates the heat it contains. At the compressor, the low pressure gas is changed to high pressure gas.
= 16ou kg x 9.8/m 15 xrom
7.ů5 X 105 Ek gained = 7.05x10
5. Calculate the 'efficiency of the roller coaster if the vertical height of the rollercoaster at point B is 90.0 m, the mass of the coaster is 1600 kg and the velocity the coaster at point Fis 37.0 m/s
Answer:
efficiency can be expressed in terms of power.
If so, power=force*velocity
P= (mass×gravity)*velocity
p= 1600×9.81×37
p=580752
Help please
Stress is a ______________ that's created when we react to particular events.
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Question 2 5 pts
What signals the adrenal glands to produce more of the hormones adrenaline and cortisol and release them into the bloodstream?
Group of answer choices
hyperextension
hypothalamus
hypodermis
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Question 3 5 pts
When the adrenal glands produce more of the hormones adrenaline what are two of the body’s reaction to these additional hormones:
Group of answer choices
heart rate slows down and pupils constrict
blood pressure and metabolism decrease
heart rate speeds up and sweat is produced
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Question 4 5 pts
Match the following terms with their appropriate definitions.
Group of answer choices
the stress response
the events that provoke stress
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Question 5 5 pts
The article talks about building up your resilience to cope with stress. What does resilience mean?
Group of answer choices
the capacity to recover quickly from difficulties
incapable of change
not good in stressful situations
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Question 6 5 pts
What are two ways that you can control stress?
Group of answer choices
compulsiveness and pesim
Answer:
This doesn't seem to really be a physics problem:
In physics stress is usually defined as Young's Modulus or Bulk Modulus
In the case of Young's Modulus Y would be defined as
Y = Stress / Strain or Force / Area
So the stress would be the force acting on some particular area: in the case of a wire the area is merely the area of the wire where the force is applied.
So maybe, they mean that stress would be an increase in blood pressure or some other physiological reaction due to an externally applied force.
When long chains of carbon and hydrogen atoms break apart into smaller
chains, the temperature decreases. Which type of reaction is this?
A. Combustion
B. Endothermic
C. Replacement
D. Exothermic
Answer:
Endothermic
Explanation:
The radius of a planet is three times that of Earth and its mass is nine times that of Earth. The acceleration due to gravity on this planet is _________g.
Answer:
9.836 ms^-2
Explanation:
If
r= 3re
m= 9me
But
g= Gm/r^2
G= 6.67 × 10^-11
me= 6 × 10^24 Kg
re= 6.38 × 10^6 m
g= 6.67 × 10^-11 × 9×6 × 10^24/(3 ×6.38 × 10^6)^2
g= 9.836 ms^-2
Assume that John Travoltage and the carpet are neutral to start. After he rubbed his foot on the carpet on took negatives, what charge is on the carpet and why
Answer:
Same charge, positive.
Please see below as the answer is self-explanatory.
Explanation:
Due to the principle of conservation of the charge, if both the man and the carpet were neutral to start, any negative charge transferred to the man by the carpet, must have its positive counterpart on the carpet, so the system man + carpet can keep neutral as required by this principle, due charge can't neither created nor destroyed.what heavy element was the chernobyl nuclear accelarators supposed to make?
Answer
plutonium
Explanation:
brainliest please
At a depth of 1030 m in Lake Baikal (a fresh water lake in Siberia), the pressure has increased by 100 atmospheres (to about 107 N/m2). By what volume has 1.0 m3 of water from the surface of the lake been compressed if it is forced down to this depth
Answer:
the volume that has 1.0m^2 of water from the surface of the lake is 4.3
Explanation:
The computation of the volume is as follows;
The Bulk modulus is
= K = 2.3 × 10^9 Pa
K = - V dP ÷ dV
dV = - V dP ÷ K
dV = - (1 × 101.3 × 1000) ÷ 2.3 × 10^9
= - 4.3 × 10^-3 m^3
So the volume that has 1.0m^2 of water from the surface of the lake is 4.3
Hence the same is relevant and considered
What causes the different colors of visible light in the electromagnetic spectrum?
Answer:
The color of the light is determined by the frequency of the light wave. Red, is lowest, frequency and violet is the highest.
The wavelengths of visible light split into the rainbow's hues as it passes through a prism because each color has a unique wavelength.
What is the electromagnetic spectrum?The range of all EM radiation types is known as the electromagnetic (EM) spectrum. The light source from a bulb in your home and electromagnetic frequency from a radio station are two examples of electromagnetic radiation. Radiation refers to the energy that moves and disperses as it does.
The wavelength of visible light affects its color. These lengths span the spectrum, from 700 nm at the red end to 400 nm at the violet. The only electromagnetic fields that we can perceive are visible light waves. These waves represent the rainbow's colors to us.
The wavelengths divide into the rainbow's hues as the whole visible light spectrum passes through a prism because each color has a unique wavelength.
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Is it possible that the physical velocity is constant but the magnitude of the velocity is variable?give an example
Answer:
yes it is possible
Explanation:
if the body is travelling with uniform speed in a circular track its speed remains the same but the velocity is non-uniform as the direction of the body is changing every time.
eg: a body in uniform circular motion has constant speed but its velocity changes at every point during the course of motion. Whenever, the direction changes, velcoity changes.
Running at 2.0 m/s, Burce, the 45.0 kg quarterback, collides with Max, the 90.0 kg tackle, who is traveling at 7.0 m/s in the other direction. Upon collision, Max continues to travel forward at 1.0 m/s. Draw or describe simply the diagram before and after collision including objects, mass, velocity, and velocity vectors.
Answer:
max
Explanation:
because its right 90/7
The current shape of the solar system is *
1. A spiral or flat swirling disk with the Sun in the center
2. A spherical, with the objects in the solar system orbiting the sun in all directions
3, There is not logical order or shape in our solar system
4. A flat swirling disk with the Earth in the center
Two astronauts, A and B, both with mass of 60Kg, are moving along a straight line in the same direction in a weightless spaceship. Relative to the spaceship the speed of A is 2 m/s and that of B is 1 m/s. A is carrying a bag of mass 5 Kg with him. To avoid collision with B A throws the bag with a speed v relative to the spaceship towards B catches it. Find the minimum value of v.
Answer:
[tex]V=14m/s[/tex]
Explanation:
From the Question we are told that
Mass of A and B is 60kg
Speed of A=2m/s
Speed of B=1m/s
Mass of bag =5kg
Generally the momentum of the astronaut A and bag is mathematically given as
[tex]M_A=(60+5)*2[/tex]
[tex]M_A=130kgm/s[/tex]
Generally to avoid collision the speed of astronaut be should be less than or equal to that of astronaut A with the bag
Therefore for minimum requirement speed of astronaut A should be given by astronaut B's speed which is equal to 1
Therefore
[tex]130=(60*1)=(5*v)[/tex]
[tex]V=14m/s[/tex]
To avoid collision with B, A throws the bag with a speed of 26 m/sec.
Given-
The mass of the two astronauts A and B is 60 kg.
The mass of astronaut A is 65 kg with the box.
The speed of astronaut A is 2 m/sec.
The speed of astronaut B is 1 m/sec.
The mass of the bag is 5 kg.
The momentum of a body is the product of its mass and velocity. Thus the momentum of astronaut A is,
[tex]M_{A} =m_{a} \times v_{a}[/tex]
[tex]M_{A} =(60+5)\times2[/tex]
[tex]M_{A} =130[/tex]
To avoid the collision with B, A throws the bag with a speed v. For this the momentum after the trough must be equal to the momentum of A. Therefore,
[tex]M_{A} =5\times v_{r}[/tex]
[tex]130 =5\times v_{r}[/tex]
[tex]v_{r}= \dfrac{130}{5}[/tex]
[tex]v_{r}=26[/tex]
Hence, to avoid collision with B, A throws the bag with a speed of 26 m/sec.
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4. Mr. Ames is dragging a box full of books from his office to his car. The box and books together have a
combined weight of 134 N. If the coefficient of static friction between the pavement and the box is 0.55, low hard
must Mr. Ames push horizontally on the box in order to start it moving?[74N]
Answer:
F = 73.7 N = 74 N (rounding off)
Explanation:
In order to get the box to start moving, Mr. Ames must push it with a force equal to the frictional force acting on it. Therefore, this force can be calculated through the following formula:
[tex]F = frictional force = \mu R[/tex]
where,
μ = coefficient of friction = 0.55
R = Normal Force on Box = Weight of Box with books = 134 N
Therefore,
[tex]F = (0.55)(134\ N)\\[/tex]
F = 73.7 N = 74 N (rounding off)
A toy car attached to a rope is traveling around in a circle. It makes 4 laps in 12s.What is the angular velocity of the toy car?
Answer:
2.09 rad/s
Explanation:
Given that,
A toy car makes 4 laps in 12 s.
We need to find the angular velocity of the toy car. We need to find the angular velocity of the toy car.
4 laps = 25.13 rad
So,
[tex]v=\dfrac{25.13\ rad}{12\ s}\\\\v=2.09\ rad/s[/tex]
So, the angular velocity of the toy car is 2.09 rad/s.
Estimate the volume of a typical home (2420 ft^2 in size and 10 ft tall) Answer in units of m^3
Answer:
volume = 683.53 [tex]m^{3}[/tex]
Explanation:
From the given question,
area = 2420 [tex]ft^{2}[/tex]
height = 10 ft = 3.048 m
But,
1 [tex]ft^{2}[/tex] = 0.092903 [tex]m^{2}[/tex]
So that,
2420 [tex]ft^{2}[/tex] = 224.8254 [tex]m^{2}[/tex]
Volume = area x distance
= 224.8254 x 3.048
= 683.5262
volume = 683.53 [tex]m^{3}[/tex]
A coil with 25 turns of wire is moving in a uniform magnetic field of 1.5 T. The magnetic field is perpendicular to the plane of the coil. The coil has a crosssectional area of 0.80 m2
. The coil exits the field in 1.0 s.
Find the induced emf.
Given that,
Number of turns, N = 25
Magnetic field, B = 1.5 T
The coil has a crosssectional area of 0.80 m2
The coil exits the field in 1.0 s.
To find,
Induced emf in the coil.
Solution,
The induced emf in the coil is given by :
[tex]\epsilon=\dfrac{-d\phi}{dt}\\\\=\dfrac{dB}{dt}\\\\=\dfrac{NBA}{t}\\\\=\dfrac{25\times 1.5\times 0.8}{1}\\\\=30\ V[/tex]
So, the induced emf in the coil is 30 V.
No work is done by an object at rest because.
1) no force is acting on the object.
2) no distance is moved.
3) heat is not produced.
4) friction is acting on the object
Answer:
no distance is moved as w=f×d
A hockey player applies an average force of 80.0 N to a
0.25 kg hockey puck for 0.10 s. What is the impulse
experienced by the hockey puck ?
Answer:
[tex]Impulse = 8.0Ns[/tex]
Explanation:
Given
[tex]Force = 80.0N[/tex]
[tex]Mass = 0.25kg[/tex]
[tex]Time = 0.10s[/tex]
Required
Determine the impulse
The impulse is calculated as follows:
[tex]Impulse = Force * Time[/tex]
Substitute values for Force and Time
[tex]Impulse = 80.0N * 0.10s[/tex]
[tex]Impulse = 8.0Ns[/tex]
Hence, the impulse experienced is 8.0Ns
Different structures give compounds different properties
4. A thermos bottle has two layers, a glass layer and a vacuum layer.
The vacuum layer is the better
o radiator
O convector
o insulator
O conductor
Explanation:
..........the answer is insulater
How many electrons does Gold have?
Answer:
79 I believe! don't mind the rest sjjdjdiwowjekwhfjdoaoqhenfixiwnsodjd djdjsiwuwieodjskrkf
How are Christian beliefs different than those who believe in reincarnation?
Answer:
While different religious groups like Hinduism, Sikhism, Jainism, and Buddhism belief in reincarnation and that a person has the chance to be reborn as a new person, depending on how the current life is, Christianity holds a different belief in that there is no reincarnation per se, but there is an afterlife with God for eternity in His kingdom.
Explanation:
The basic concept of reincarnation is a belief held by major religions of the world such as Hinduism, Jainism, Buddhism, and Sikhism. This philosophical belief holds that there is a rebirth or transference of an aspect of a person, be it the soul or mind or any subconscious to a different entity after one dies.
While Christianity does not specifically belief in reincarnation, it does hold the belief that the physical or bodily death of a person is not the end of that person. Rather, Christians belief in the afterlife, a life of eternity with God in His kingdom. This is not the same as reincarnation, for it involves no such rebirth as some other animal or even into a new person or being.
Thus, the Christian belief of afterlife is much different from the other religious beliefs of reincarnation.
a device that consist audio information in electrical signal is
Answer:
Electromechanical transducer,
Explanation:
this is the answer I hope u got it
Answer:
yes it is a correct answer