A dog walks 12 meters to the west and then 16 meters back to the east
2 answers:
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Answer:
Acceleration of the crate is 0.362 m/s^2.
Explanation:
Given:
Mass of the box, m = 40 kg
Applied force, F = 15 N
Angle at which the force is applied, = 15°
We have to find the magnitude of the acceleration.
Let the acceleration be "a".
FBD is attached with where we can see the horizontal and vertical component of force.
⇒ and ⇒
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⇒ Applying concept of forces.
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⇒ <em> ...Newtons second law Fnet = ma</em>
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⇒ Plugging the values.
⇒ <em>...f is the friction which is zero here.</em>
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⇒
Magnitude of the acceleration of the crate is 0.362 m/s^2.
Answer:
The heat is 115478.4 J.
Explanation:
Given that,
Mass of water = 0.400 kg
Power = 200 W
Suppose, we determine how much heat must be added to the water to raise its temperature from 20.0°C to 89.0°C?
We need to calculate the heat
Using formula of heat
Where, m = mass of water
c = specific heat
Put the value into the formula
Hence, The heat is 115478.4 J.