Answer:
I think golf does not demand high level of physical fitness. A golfer just need be skillful and able to play under pressure. In terms of physical exercise i think he/she just need to do some muscle stretches.
Explanation:
It took 50 joules to push a crate 2.5 meters. With what force was the crate pushed?
Answer:
2100 J
Explanation:
The heat required to increase the temperature of a substance is given by
where
m is the mass of the substance
C is its specific heat capacity
is its change in temperature
For the water in this problem, we have:
m = 100 g is its mass
C = 4.2 J/g • °C is the specific heat capacity
is the increase in temperature
So, the amount of heat needed is:
Stay inside when theres lightning or try not to be the tallest object in a wide open space
This is a good question. The short (but less satisfying) answer is: "because the hydrostatic pressure of oil at a certain depth depends on the height of the oil level, measured from that point." So, you can have a tiny amount of oil but arranged in a column that makes it very tall/high and get high pressure, and have same amount of oil spread so that the height is negligible to produce a negligible amount of pressure. The exact formula for pressure is P=r*h*g (r stands for the liquid density, h for height, and g for gravitational acceleration).
The long answer, but much more satisfying, goes through the derivation of this formula. I recommend searching for a good video explaining hydrostatic pressure. (I can't post links).
