Answer:
Explanation:
The Sun won't explode. ... Eventually (in five or seven billion years time), the Sun's life will come to an end. Our star will swell up, becoming something called a “Red Giant” star. It might even get so big that it swallows the Earth whole.
DC current is less than AC current
true\false
Answer:
False
Explanation:
.......................
what is magnetic field right and left hand rule
Answer:
The Right Hand Rule, illustrated at left, simply shows how a current-carrying wire generates a magnetic field. ... The Left Hand Rule shows what happens when an electrical current enters a magnetic field. You need to contort your hand in an unnatural position for this rule, illustrated below
an object has a mass of 4kg and an average acceleration of 10m/s/s what is the force
Define work What is the unit for work? For Physics, thanks.
Answer:
Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement
Explanation:
An ocean wave has a frequency of 3 waves per second, and the waves are
5 meters apart. What is the speed of the wave?
Answer:
v = λf = (4 m)(3 Hz) = 12 m/s
Explanation:
1. If two objects each with the mass of 2.0 x 10^2 kg, produce gravitational force between
them of 3.7 x 10^-6N , What is the distance between them ?
Answer:
r = 0.849 m
Explanation:
Given that,
The masses of two objects, [tex]m_1=m_2=2\times 10^2\ kg[/tex]
The force between the objects, [tex]F=3.7\times 10^{-6}\ N[/tex]
We need to find the distance between the masses. The force between two objects is given by the relation as follows :
[tex]F=G\dfrac{m_1m_2}{r^2}[/tex]
r is the distance between them
[tex]r=\sqrt{\dfrac{Gm_1m_2}{F}} \\\\r=\sqrt{\dfrac{6.67\times 10^{-11}\times (2\times 10^2)^2}{3.7\times 10^{-6}}} \\\\r=0.849\ m[/tex]
So, the distance between them is 0.849 m.
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Answer:
Is there a map of the town? It doesn't make sense without coridnates or street lengths. If it was a straight isosilese triangles the return time is 3:36pm. This answer doesn't make sense if there is a map.
Explanation:
Side a is 12km Side b 15 km Side c 19.21 km.
9am depearture
11am 12km away rest
11:30am starts at 10 km/h
1:00 pm reaches town
2:00pm done lunch
3:36 pm return home.
can someone help me fill in the two boxes.
Answer:
Explanation:
I believe what you're looking for is :
Opposites
Density
Could be wrong but I think so.
An object accelerates at 8 m/s^2 when a force of 40 Newtons is
applied to it. What is the mass of the object? (Use formula: m=Fla)
Answer:
5 kg
Explanation:
Acceleration = 8 m/s^2
Force = 40 N
Force = mass * acceleration
mass = force / acceleration
mass = 40 / 8
mass = 5 kg
What is the weight of an object on Earth with a mass of 90.0kg?
Answer:
Weight (Force) = mass x acceleration due to gravity Weight = 90.0 kg x 9.80 m/s2 Weight = 882 N or 882 kg m/s2 Page 2 Newton's Notes 2 Gravity has an effect on an object in the vertical direction only.
Answer:
882.9N
Explanation:
1kg is 9.81n
A 1-kg plastic block is neutrally buoyant when submerged in water with a density of 1 g/cm3. If the same block is placed, such that it is completely submerged, in a container of oil with a density of 0.8 g/cm3, find the acceleration of the block.
Answer:
-2 m/s
Explanation:
The computation of the acceleration of the block is as follows:
The volume of the block is
V = 1kg ÷ 1,000 kg/m^3 = 1 ÷ 1,000 m^3
Now at the time of submerging in the oil
Net force is
[tex]m_g - F_B = m \times (-a)\\\\m_g - v\times S_{oil} \times g = -ma\\\\a = (\frac{v}{m} \times S_{oil} - 1) g\\\\= (\frac{1}{1000} \times 0.8 \times 1000 -1 ) \times 10\\\\[/tex]
= -2 m/s
is 468km per minute describing speed or velocity
A pencil aapears bent when dippes partially in a beaker contaning water why?
i
the pencil appears to be bent when dipped in water because the reflected light ray from the immersed part of the pencil refracts when travels from water to air. however, it appears to be bent because our eyes expect light to travel in straight line
A 15 kg box sits still on a rough inclined plane (no math required here).
Why isn’t the box sliding down the hill?
Answer:
Explanation:
The force of friction equals the sine component of the force due to gravity
Which of the following statements about transition metals is true?
a.
They are never found uncombined in nature.
b.
They include familiar metals such as gold, silver, copper, and nickel.
c.
They are so soft that they can be cut with an ordinary knife.
d.
They are the most reactive of all the types of metals.
Answer:
b.They include familiar metals such as gold, silver, copper, and nickel.
They include familiar metals such as gold, silver, copper, and nickel.
Transition metals are like main group metals in many ways: They look like metals, they are malleable and ductile, they conduct heat and electricity, and they form positive ions.
What are metals ?"A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile."
What are transition metals ?"Transition metals are placed between s−block and p−block elements in periodic table. They are termed as d-block elements. These metals are unstable and exhibit transitional behavior between s block and p block elements, hence the name transition metals."
What is electricity ?"Electricity is defined as the rate of flow of charges in a conductor."
Electricity is defined as the effects of an electric charge. An example of electricity is the force that powers a light bulb. An example of electricity is lightning. An example of electricity is static electricity, the buildup of electric charges on an object's surface.
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Why is mineral copper often used to make electrical wires
Because copper is the second-best electrical conductor, it's cheaper and more plentiful than silver, and it's relatively easy to get it out of the ground, refine it, and form it into wires.
(If the electrical wiring in your house was all silver wire, I guess nothing would ever work, because people would keep stealing your wiring.)
A tennis ball covers a distance of 12 meters in 0.4 seconds what is the velocity of the tennis ball?
Answer:
30m/s
Explanation:
Given parameters:
Distance = 12m
Time taken = 0.4s
Unknown:
Velocity of the tennis ball = ?
Solution:
Velocity of a body is the displacement per unit of time.
Velocity = [tex]\frac{displacement}{time}[/tex]
So;
Velocity = [tex]\frac{12}{0.4}[/tex] = 30m/s
What is the net force on a 116 kg woman free falling at 97 m/s who has reached terminal velocity.
What is the net force on this box?
100 N
80 N
90 N
1
100 N
Answer:
10 N to the right
and the up and down is 0 N
i hope it can help
Pls help this is due today.
Beyonce weighs 500 N and is sitting at one end of a see-saw which is 4 m long and balanced in the middle. Jordan is 2000 N. Where should she sit in order to balance the see-saw?
Answer:
11 moments docx has the answer
Explanation:
Calculate the watts of power expended when a force 400 N travels 12 meters over 10 seconds.
Answer:
Explanation:
Example
List at least 5 examples of civil rights
Answer:
right to vote, the right to a fair trial, the right to government services, the right to a public education, and the right to use public facilities.
The formation of new elements through the process of fusion in a star’s core stops at iron. How are elements larger than iron formed?
Answer:
During a supernova, the star releases very large amounts of energy as well as neutrons, which allows elements heavier than iron, such as uranium and gold, to be produced. In the supernova explosion, all of these elements are expelled out into space.
hope this helps.
Explanation:
How is electric charge different than gravity? A. Electric charge has a smaller constant B. Gravitational force can only be positive C. Charges can be either positive or negative for electric charge D. The calculation of the radius is different
B and C are both true statements.
Which of the following is an example of physical change?
A. Mixing baking soda and vinegar together, and this causes bubbles and foam.
B. A glass cup falls from the counter and shatters on the ground.
C. Lighting a piece of paper on fire and the paper burns up and leaves ashes.
D. Baking a birthday cake for your mother.
B. A glass cup falls from the counter and shatters on the ground.
What is a physical change?A physical change is a change in which no new substance is formed after the change occurs
When a glass cup falls to ground , no new substance is formed, hence this change is a physical change
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1. Convert the following to Scientific notation
A) 0.005
Explain why you have to close the switch in order for the electromagnet to pick up any paperclips.
To start the magnetic field
Look at the picture of the galaxy, above. What type of galaxy is this?
A.
spiral
B.
elliptical
C.
barred spiral
D.
irregular
Answer:
A
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Explanation:
Help me pleaseeeeee due. Today
Answer:
1. geothermal
2. nuclear
3. biofuel
1)Describe the difference between an
energy transfer and energy store.
2)Give 3 examples of an energy transfer.
3)Give 3 examples of an energy store.
Answer:
1) Energy transfer is the movement of energy from one location to another. ... Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.
2)A swinging pirate ship ride at a theme park. Kinetic energy is transferred into gravitational potential energy.
A boat being accelerated by the force of the engine. ...
Bringing water to the boil in an electric kettle.
3)Common examples of energy storage are the rechargeable battery, which stores chemical energy readily convertible to electricity to operate a mobile phone, the hydroelectric dam, which stores energy in a reservoir as gravitational potential energy, and ice storage tanks, which store ice frozen by cheaper energy at night
Explanation:
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