This is the definition of specific heat capacity. 1000J of heat are required to raise the temperature of 1kg of the compound by 1 degree. Therefore a 1000J have been added to the block.
The amount of energy transferred is 4320 J
Explanation:
Power is defined as the amount of energy transferred per unit of time:
where
P is the power
E is the amount of energy transferred
t is the time
In this problem, we have:
P = 720 W is the power
t = 6 s is the time elapsed
Solving for E, we find the energy transferred needed to push the box:
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If committees is an option it is the correct one.
Answer:
<h2>39.15 N</h2>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 14.5 × 2.7
We have the final answer as
<h3>39.15 N</h3>
Hope this helps you
Answer:
The radius of the loop is 20.66 km
Explanation:
let the radius of the loop be r
mass of airplane is m
At the top, the pilot experiences two radial forces, which are
1) Gravitational force is mg
2) Centrifugal forces mv²/r out of the center
When the pilot experiences no weight,
then, mg = mv²/r
r = v² / g
= 450² / 9.8
= 20.66 x 10³3
= 20.66 km