Answer:
The woman's force was directed 59.22⁰ to the horizontal.
Explanation:
Given;
work done by the woman, W = 236 J
distance through the load was moved, d = 24.4 m
applied force, F = 18.9 N
inclination of the force, = θ
The work done by the woman is calculated as;
W = Fdcosθ
[tex]cos \ \theta = \frac{W}{Fd} \\\\cos \ \theta = \frac{236 }{18.9 \times 24.4} \\\\cos \ \theta = 0.5118\\\\\theta = cos^{-1} ( 0.5118)\\\\\theta =59.22^0[/tex]
Therefore, the woman's force was directed 59.22⁰ to the horizontal.
Answer:
59.22⁰
Explanation:
__________________ is a type of limestone deposit found around hot springs and is used for countertops.
Group of answer choices
Travertine
Granite
Marble
Give an example of metals which is the best conductor of heat and shining non metal..
NEED HELP PLZ
Answer:
silver and copper
Explanation:
A wave traveling througil air meets an object and bounced off its flat surface
at a new angle. Which statement best describes what has happened to the
wave?
A-the object had a slit in its surface that diffracted the wave. B- the object caused the wave to refract. C-the object absorbed the waves energy. D- the object reflected the wave.
Answer:
B.) the object caused the wave to refract
Explanation:
The object has caused the wave which is traveling through the air to refract back. Thus, the correct option is B.
What is refraction of wave?Refraction is the phenomena which includes the change in the direction of waves which occurs when the waves travel from one medium to another medium. Refraction is always accompanied by a wavelength and change in speed of the wave. Diffraction is the bending of waves of sound and light which takes place around the obstacles and openings.
A wave traveling through the air meets an object and bounced off its flat surface at a new angle will experience refraction of waves.
Therefore, the correct option is B.
Learn more about Refraction here:
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A 50 kg sign has been hung from two vertical ropes. What is the tension in each rope?
(show work)
Answer:
Tension is 25 N in both ropes.
T1 = 25 N
T2 = 25 N
Explanation:
We are told that the 50 kg sign has been hung from two vertical ropes.
Now, from equilibrium of forces, since the ropes are vertical, the total tension of both ropes must equal the weight of the sign.
Let the tension in both ropes be T1 and T2.
Thus;
T1 + T2 = 50
Now, since the angles are vertical, the angle with the horizontal axis will be 90°.
Resolving along the horizontal axis gives;
T1 cos 90 = T2 cos 90
This means that T1 = T2.
Thus;
Since T1 + T2 = 50, if means that; T1 = T2 = 50/2 = 25 N
When the velocity of an object is tripled, by what factor is its momentum changed ?
Answer:
also tripled, factor of 3
Explanation:
equation of momentum is p = m * v , where p=momentum, m=mass, and v=velocity
if m is unchanged
p1 = m1 *v1
p2 = m2 *v2
m1 = m2 and v2 = 3*v1
p2 = m1 * 3v1 = 3*p1, tripled momentum
What is the wavelength of this wave?
15 cm
10 cm
60 cm
cannot be determined
Answer:
what do you mean?
Explanation:
wave length is the distance from one peak to the other.
which can be measured by cm,m,dM,mm etc
so the question that you give is the answer.
PLEASE PLEASE HELP!!!!!! thank you soo much!!! *will give brainliest*
Answer:
[tex]F=1.13\,*\,10^{15}[/tex] (answer a)
Explanation:
Recall the formula for the Coulomb force:
[tex]F=k\frac{q_1*q_2}{d^2}[/tex]
which in our case gives:
[tex]F=k\frac{q_1*q_2}{d^2} \\F=9*10^9\,\frac{63*45}{0.15^2} \\F\approx 1134000\,*\,10^9\\F\approx 1.13\,*\,10^{15}[/tex]
which agrees with answer a)
According to Newton's 3rd law: There is
always an ___ __ and _______ force
acting on any object that interacts with
another object
Equal and Opposite
Vertical and Horizontal
Faster and Slower
Greater and Lesser
How much time does it take for a student running at an average speed of 5.00 m/s to cover a distance of 2.00 km?
Answer:
The student took 400 seconds to run for 2 km
Explanation:
Average Speed
If an object travels a distance d in a time t regardless of the direction, the average speed is the quotient of the total distance traveled by the total time taken:
[tex]\displaystyle \bar v=\frac{d}{t}[/tex]
The student ran at an average speed of v=5 m/s and covered a distance of 2 km. Converting km to meters: d=2 km *1000= 2000 m. We must find the time the student needed run that distance, so we solve for t:
[tex]\displaystyle t=\frac{d}{\bar v}[/tex]
[tex]\displaystyle t=\frac{2000}{5}=400\ s[/tex]
The student took 400 seconds to run for 2 km
Name the type of energy transfer:
You fry an egg on a hot car engine.
Answer:
I think the heat would transfer from the engine, because of this it would cook the egg
Explanation:
hopes this helps
The thermal heat energy transfer happens when we fry an egg on a hot car engine because the thermal energy lost from the engine is utilized for cooking the egg,
What is thermal energy?It can be defined as the form of the energy in which heat is transferred from one body to another body due to their molecular movements, thermal energy is also known as heat energy.
Thermal energy transfer is utilized while cooking food in our day-to-day life, frying egg is one such example of application of the thermal energy for cooking food.
Almost two third of the heat from any thermal engine is lost to the surroundings.
When we fried an egg on a hot vehicle engine, thermal energy is transferred because thermal energy lost from the engine is used to cook the egg.
Learn more about thermal energy from here, refer to the link;
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1. According to Newton’s first law, when forces are ______ there is NO _______.
2. According to Newton’s first law, when forces are _____ there is ______.
Answer:
1. According to Newton's first law, when forces are balanced there is no acceleration
2.According to Newton's second law, when forces are unbalanced, there is acceleration
Explanation:
this is because Newton's first law of motion states that every object will continue in its state of rest or uniform motion in a straight line unless a resultant force acts on it
hopes this helps, if not, report it, someone else will do it
What scale can I use for two force 0.8 Newtons and 0.9 Newtons? Someone please help
Answer:
Explanation:
To plot the given forces of 0.8 N and 0.9 N. It is convenient to take
0.1 N as 1 unit in Graph
For example, 1 unit in the graph is 1 cm
then take 0.1 N equivalent to 1 cm
[tex]0.8 N\equiv 8\ \text{units in graph}\\\\0.9\equiv 9\ \text{units in graph}[/tex]
what is the function of a switch? pls HELPPPPPP TYSMMMMM <3
Answer:
Connect multiple hosts: Normally, a switch provides a large number of ports for cable connections, allowing for star topology routing. It is usually used to connect multiple PCs to the network. Forwards a message to a specific host: Like a bridge, a switch uses the same forwarding or filtering logic on each port. When any host on the network or a switch sends a message to another host on the same network or the same switch, the switch receives and decodes the frames to read the physical (MAC) address portion of the message. Manage traffic: A switch in networking can manage traffic either coming into or exiting the network and can connect devices like computers and access points with ease. Keep electrical signal undistorted: When a switch forwards a frame, it regenerates an undistorted square electrical signal. Increase LAN bandwidth: A switch divides a LAN into multiple collision domains with independent broadband, thus greatly increasing the bandwidth of the LAN.
Explanation:
Explanation:
The function of the switch is
Switch is a device used for making and breaking electric current through the circuit.A measure of the pull of gravity on an object.
Group of answer choices
Mass
Height
Weight
Gravitational Potential Energy
Answer:
weight.................
Which statements best describe the second stage of cellular respiration? Check all that apply.
The stage happens in cytoplasm.
The stage happens in mitochondria.
Oxygen combines with small molecules.
Glucose is broken down.
Energy is released.
Answer:
oxygen combines with small molecules. energy is released and it happens in the cytoplasm
Explanation:
Answer:
B,C,D are the correct answers i just did it one edge for the unit review.
Explanation:
testing asking a question.
Answer:
i- testing testing,, 1 2 1 2
Answer:
?
Explanation:
Did it work how you wanted?
Find the density of a substance that has a volume of 754 cm3 and a mass of 7,917 grams.
the answer is
10.5 g/cm3
An airplane flies for 1.25 hours with a constant speed of 1080 km/hr and then for another 2.5 hours with a constant speed of 984 km/hr. How far (what distance) did it go?
Answer:
i think its 3583.2km skskks
Answer:
840 km/h divided by 60 = 14km/min
3 x 60 = 180
180 + 20 = 200 minutes total
14 x 200 = 2800km
that is a really awkward way of doing it though. really you can just do:
840 x (10/3) = 2800km
if mr galans paces is equal to 1.8 m,how many paces would it take to get to the moon
Answer:
The number of paces it would take to get to the Moon is 213,555,556 paces
Explanation:
The given length of Mr Galan's paces = 1.8 m/pace
The distance from the Earth to the Moon is, 384,400 km = 384,400,000 m
Therefore, the number of paces, "n", it would take to get to the Moon from the Earth is given as follows;
n = (The distance from the Earth to the Moon)/(The length of each Mr Galan's paces)
∴ n = 384,400,000 m/(1.8 m/pace) = 213,555,556 paces
The number of paces it would take to get to the Moon = n = 213,555,556 paces
What is the resultant force acting on an object if both forces act in the
same direction? 12 N East and 14 N East.
Explanation:
Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.
Evaluate the scenarios and select the one that demonstrates the training principle overload.
kai swims faster and faster every day.
Katie stays consistent in her routine.
Maggie does kickboxing daily so she can win a kickboxing match.
Sarah usually likes to run, but tries swimming.
Answer:
The answer is A.
Explanation:
The answer is A. because overload means to do more and Kai swims more and more every day.
Describe the relationship between the forces of attraction and the kinetic energy of particles in a solid, a liquid and a gas
Answer:
Described below
Explanation:
1) Solids: In solids, the strong attractive forces between the particles ensure that the particles are packed tightly enough and this means little or no movement between each other. However, when they experience vibration which has relationship with the kinetic energy between them
2) Liquids; In liquids due to the lesser forces of attraction between the particles, it means they tend to glide over each another but however, toward the bottom of the container they will settle. This means that the attractive forces between the liquid particles are barely strong enough to hold onto a specific volume. However, they are not strong enough to keep the molecules from sliding over one other.
3) Gases; In gases, there is almost no existing attractive force in most cases and as a result we can say the kinetic energy of the gas molecules is always greater than the attractive force between them and they are therefore far apart from each other and also move independent of each other.
how can we make periscope
Answer:
place a curved elbow joint pipe over each end of the pipe to make a periscope
An astronaut weighs 890 N on Earth. What is the astronaut's weight on the Moon? Acceleration due to gravity on the Moon is 1.62 m/s^2.
Answer:
Explanation:(a) What is her weight on earth? (b) What are her mass and her weight on the moon, where g = 1.62 ms–2? Solution: (a) On earth. W = m g = 55.0 x 9.8 = 539 N. (b) On moon, her mass remains the same, but the acceleration due to gravity
A cheetah has a mass of 60kg. It produces a force of 480 N between its feet and ground. What is the acceleration? PLEASE ANSWER QUICK!!!
The acceleration of the cheetah that has a mass of 60kg and produces a force of 480N is 8m/s²
HOW TO CALCULATE ACCELERATION:
The acceleration of a moving body can be calculated by dividing the force applied by the mass of the object. That is follows:Acceleration (m/s²) = Force (N) ÷ mass (kg)According to this question, a cheetah has a mass of 60kg and produces a force of 480NAcceleration = 480 ÷ 60
Acceleration = 8m/s²
Therefore, acceleration of the cheetah that has a mass of 60kg and produces a force of 480N is 8m/s²Learn more at: https://brainly.com/question/20162276?referrer=searchResults
A 25kg box starts from rest and slides down a 200m frictionless ramp that has an angle of 20degrees from the horizontal. What is the acceleration of the box.
4pts. Draw a Freebody diagram, assign a meaningful coordinate system, identify all forces acting on the free body diagram.
2pts. Apply Newton’s second law to show how you calculate net force and the relationship between mass and acceleration.
2pts. Identify known and unknown variables.
2pts. Solve
Answer:
acceleration =9.2089
Explanation:
force acting: gravity, normal force exerted by the box
F=m*a
= 25*g
=25*gcos(20)
= 230.224N
acceleration= gcos(20)
= 9.8*0.939
acceleration =9.2089
Hot liquids and gasses move in one direction
Answer:
some times the glass breaks
Explanation:
While at soccer practice, Korey ran around the track at 10 meters per second. He had a constant speed and did not change directions. What is Korey's acceleration?
Answer:
0m/s²
Explanation:
A body with a constant speed always has a zero acceleration
Hence if Korey ran around the track at 10 meters per second and had a constant speed and did not change directions, then his acceleration will be 0m/s² not considering his initial speed
How does the present day model of the atom DIFFER from the Rutherford’s model? How does the present day model of the atom SIMILAR to Rutherford’s model?
Answer:
The present day model shows a nucleus composed of protons and neutrons with cloud-like spheres of different diameters surrounding the nucleus to represent the energy levels of the electrons in the atom. Rutherford's model shows electrons orbiting the nucleus along fixed, but similar- diameter circular paths.
Both models show the composition of the nucleus at the center of the atom and the much smaller electrons at some distance from the nucleus.
Explanation:
Neither of the models does a good job of representing the relative size differences of the protons, neutrons and electrons, or the distance between the nucleus and the "electron clouds."
how many atoms are in each product silver sulfide
there are 3 atoms in each silver sulfide