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Firdavs [7]
2 years ago
12

A person throws a tennis ball 6 m/s straight up. How long does it take for it to come back to their hand?

Physics
1 answer:
Alja [10]2 years ago
7 0
(t) = 2t = 1.22 sec. I believe ...
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Determine which heat transfers below are due to the process of conduction. I) You walk barefoot on the hot street and it burns y
Taya2010 [7]

Answer:

I) You walk barefoot on the hot street and it burns your toes.

II) When you get into a car with hot black leather in the middle of the summer and your skin starts to get burned.

Explanation:

In conduction mode of heat transfer we know that the energy is transferred from one system to other system due to direct contact of two bodies

Here due to this direct contact the energy is transferred via a given solid or liquid medium

In this type of heat transfer medium particles will remain in its own position only the energy is transferred.

So here we can say the correct answer will be

I) You walk barefoot on the hot street and it burns your toes.

II) When you get into a car with hot black leather in the middle of the summer and your skin starts to get burned.

3 0
3 years ago
Where does most of the energy we use at home/our cars come from?
KengaRu [80]
It comes from the sun, and then it is converted to energy/electricity (by solar panels)
4 0
2 years ago
What is a galaxies ???
-Dominant- [34]

Answer:

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. The word galaxy is derived from the Greek galaxias, literally "milky", a reference to the Milky Way.

Explanation:

4 0
2 years ago
Read 2 more answers
Energy that cannot be used to do useful work is referred to as Select one: a. potential energy. b. entropy. c. kinetic energy. d
topjm [15]

In thermodynamics, entropy (symbolized as S) is a physical magnitude for a thermodynamic system in equilibrium. It measures the number of microstates compatible with the equilibrium macrostate, it can also be said that it is the reason for an increase between internal energy versus an increase in system temperature.

The universe tends to distribute energy evenly; that is, to maximize entropy. Intuitively, entropy is a physical quantity that, by calculation, allows us to determine the part of energy per unit of temperature that cannot be used to produce work.

Therefore the correct answer is B.

5 0
3 years ago
Please list them from top to bottom, for exp like in your response, a,g,q,d. Giving quite some points for it.
Aleks04 [339]
D,f,g,h,i,a,e,c,j. I’m sure that it
7 0
2 years ago
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