Answer:
kepler
Explanation:
While Copernicus rightly observed that the planets revolve around the Sun, it was Kepler who correctly defined their orbits. At the age of 27, Kepler became the assistant of a wealthy astronomer, Tycho Brahe, who asked him to define the orbital mars
Answer:
B
Explanation:
It creates an equal amount of p energy.
REMEMBER: ENERGY CAN NEVER BE CREATED OR DESTROYED.
Answer:
The direction and magnitude of velocity is 38.65° and 12.005 m/s
Explanation:
Given that,
Mass of car = 1500 kg
Speed of car = 25.0 m/s
Mass of van = 2500 kg
Speed of van =20.0 m/s
We need to calculate the velocity
Using conservation of energy
The magnitude of velocity
We need to calculate the direction
Hence, The direction and magnitude of velocity is 38.65° and 12.005 m/s.
Answer:
False
Explanation:
The direction of magnetic field on a current carrying conductor can be determined by the Fleming's right hand rule where
- The thumb represents the direction of motion
- the index finger represents the direction of field.
- The middle finger is the direction of induced current.
When two conductors carrying currents flowing in opposite direction, the magnetic field will be in the same direction hence they will repel.
<u><em>When the currents in them flow in same direction, then it means the magnetic field will be opposition and there will be a force of attraction between the conductors.</em></u>
Answer:
Explanation:
When we lift a ball with the hand the forces experienced by the ball is
Resultant of these forces gives acceleration to the ball
While your hand exerts a force on the ball, the ball will also exert a force of equal magnitude but opposite in direction to the force by hand.
All these forces is exerted on the ball, hand or on the earth.
