i think its D, all of them.
In my opinion it does. The more water the pot holds, the longer you need to wait for it to freeze. Since there is more water, some parts may not be completely frozen. An experiment you can try is to get an ice cube container and a pot. fill both of them and put them in the freezer for the same amount of time. When you take it out, the ice cubes should be frozen leaving the pot with cold water.
D = m/v
2.7 = 3/x
2.7x = 3
x = about 1.11
- mechanical energy is conserved in all the listed situations
- true
- potential energy
- 490 J
- 750,000 J
EXPLANATION
1. sum of kinetic energy (KE) and potential energy (PE) is known as mechanical energy
- kinetic energy is the motion of an object
- potential energy is the position of an object
there is kinetic energy and other energies in the listed situation.
2. since the height decreases due to the fall, the potential energy also decreases but the speed increases and kinetic energy simultaneously increases so the potential energy is converted to kinetic energy.
3.the energy consumed by an object due to its position is known as potential energy
4. potential energy
PE = m g h
m = 10 kg mass of the object
g = 9.8 m/s^2 acceleration of gravity
h= 5 m height of the object from ground
substituting every value in the formula
PE = (10)(9.8)(5)
PE= 490 J
5. potential energy
PE = m g h
but given is the weight and the height of the elevator
W= 1500 N
h= 500 m
but weight of the object is equal to the product of acceleration of gravity and mass of the elevator
so, W = mg
so we can rewrite the formula as PE = Wh
PE = (1500)(500)
PE= 750,000 J