hope this helps
Answer:
If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.
Answer:
It's A
Explanation:
Although I'm not sure about the second one, I'm sure the first one is A
Answer:
The kinetic energy is 303178 Joule
Explanation:
We must change the speed units to m / s =
1km ---- 1000meters
1h ----- 3600 seconds
v = (95km 1000m / km) / (1h x 3600s / h) = 26, 4 m / s
We use the Kinetic Energy formula: Ec = 1/2 m x v ^ 2
Ec = 1/2 x 870 kg x (26, 4) ^ 2 = 303177, 6 Joule
Explanation:
As the atomic number increases, so does the number of electrons and protons.
:)
Basic basic basic, fundamental, elementary, and basic.
Please memorize this <em>definition</em> of acceleration:
<em>Acceleration</em> = <em>(change in speed) </em><em>divided by</em><em> (time for the change)</em> .
For example: Goes from 0 m/s to 10 m/s in 5.0 sec.
Change in speed = (10 - 0) = +10 m/s
Time for the change = 5.0 sec.
Acceleration = (+10 m/s) / (5.0sec) = +2 m/s² .