D because it's true, an example would be weather. A recent science report said that for the next few years, winter will get colder until 2022.
It turns into kinetic energy; as an object falls it loses potential energy and it can be transfer into friction into heat.
Answer:
The absolute pressure in the tank is 594 kPa.
Explanation:
Given that,
Gage pressure = 500 kPa
Atmospheric pressure = 94 kPa
Absolute pressure :
The absolute pressure is the addition of atmospheric pressure and gage pressure.
We need to calculate the absolute pressure in the tank
Using formula of absolute pressure
In mathematically form,
Put the value into the formula
Hence, The absolute pressure in the tank is 594 kPa.
#3). Your drawing in the lower right corner is correct. You're headed down the right road, but ran out of gas and just stopped.
Radius of the circle = 1.5 km
Circumference of the whole circle = (2·π·radius) = 9.42 km
Distance = 3/4 of the way around it = 7.07 km .
Displacement = the straight line from the West point to the North point. The straight-line length is 2.12 km; the straight-line direction from start to finish is Northeast (45°). I'll let you figure out why these numbers.
#4). What if you walk 1 mile East and then 1 mile West ? You got a good workout, and you're back home where you started ! Your distance is 2 miles, and your displacement is zero.
The whale had a good workout too. She swam (6.9 + 1.8 + 3.7) = 12.4 km. She's sweating and tired. Her total distance during that workout is 12.4 km.
Her displacement is the line from start-point to end-point. How she got there doesn't matter, so swimming 1 km East and then swimming 1 km West cancel out, and have no effect on the displacement.
(6.9E + 1.8W + 3.7E) = (10.6 E) + (1.8 W) . . . That adds up to 8.8 East ! That's where she ends up. That's her displacement ... 8.8 km East of where she started. Since we're only talking about displacement, we don't care HOW she got there. She might have been swimming big 20-km circles all day. We don't know. All we know is that she ended up 8.8 km East of where she started.
Potential energy is the energy possessed by the body at rest. It is calculated by the formula mgh, Where m is the mass of the body, g is the gravitational acceleration and h is the height.
From the law of conservation of energy, energy is neither created nor destroyed but can be transformed from one form to another.
Thus, the internal energy will be equivalent to the potential energy
= 11.5 × 9.8 ×6.69
= 753.963 joules