Answer:
5. Solenoid B’s magnetic field is 2.7 times greater than solenoid A's magnetic field.
Explanation:
The magnetic field produced by a solenoid depends on number of coils, the length of the solenoid and the amount of current flowing through the coil.
Current in solenoid B is 2 times greater than the current in solenoid A.
Number of coils in B is 4 times greater than coils in A
Length of the solenoid B is 3 times greater than solenoid A
Thus, solenoid B's magnetic field is 2.7 times greater than magnetic field of solenoid A.
-- A change in speed can be either speeding up or slowing down. These effects can be caused by the gas pedal or the brake pedal.
-- Velocity is made of the car's speed and direction. These can be changed by the gas pedal, the brake pedal, or the steering wheel.
Newton's second law states that the force applied to an object is equal to the product between the mass m of the object and its acceleration a:
Using
and
, we can find the value of the force applied to the roller-blade to obtain this acceleration:
Each planet orbiting our sun is unique. Yet the four inner planets have much in common. Mercury, Venus, Earth and Mars are terrestrial or telluric planets. They are rocky with a dense metal core consisting mostly of iron. Planetary scientists theorize that Mars and Venus may once have had conditions like Earth's, favorable to life. The name "terrestrial" comes from the Latin word "terra," which means land. There are at least four Jovian or gas planets in our solar system. Jovian planets such as Jupiter, Saturn, Uranus and Neptune are large planets that are composed of light materials such as hydrogen and helium. The name "Jovian" comes from the planets' resemblance to Jupiter. The moniker "gas planet" is slightly misleading, since the interior of these frigid planets is gas supercooled to a liquid state.