C, planets orbit around the sun because of gravity
Answer:
Explanation:
An impulse results in a change of momentum
If the wagon and dog both stop, they must have had equal and opposite momentums
FΔt = mΔv
F = mΔv/Δt = m(v₁ - v₀)/(t₁ - t₀)
v₁ = t₀ = 0
F = m(v₀)/t₁
F = 55(2.1)/0.1 = 1155 N
We could have also figured the dog's initial velocity and used the dog's mass in the equation as well. Result would be identical.
Answer:
Intensity
Explanation:
Intensity basically means the amount of light. Hence, they are arguing about the amount of light that one color reflects more than another.
Answer:
Defined below
Explanation:
Climate change is simply the long term change in the average weather patterns that are associated with the local, regional and global climates of the earth. Climate change is usually driven by human activities like burning of fossils; natural processes like cyclic ocean patterns; external factors like volcanic eruptions.
Answer:
The magnitude of a uniform electric field that will stop these protons in a distance of 2 m is 1.01 x 
N/C
Explanation:
given information,
kinetic energy, KE = 3.25 x 
J
proton's mass, m = 1.673 x 
kg
charge, q = 1.602 x 
C
distance, d = 2 m
to find the electric field that will stop the proton, we can use the following equation:
E = F/q
= (KE/d) / q , KE = Fd --> F = KE/d
= KE/qd
= (3.25 x J) / (1.602 x C)(2 m)
= 1.01 x N/C
