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murzikaleks [220]
3 years ago
5

Which statement BEST explains why the specific heat of water is higher than the specific heat of most other substances? A) Due t

o its polarity and hydrogen bonding water can absorb heat without a significant temperature change. B) Due to the ionic bonding in liquid water, it takes more heat energy to reach boiling. C) Because water is a covalent compound, it takes a lot of energy to change its kinetic energy. D) Water has a higher density value than most substances and requires more energy to change the temperature.
Physics
1 answer:
Pavel [41]3 years ago
4 0
The answer is A because the hydrogen bonds are the most important factors in specifc heat of water

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A metal rod has a moves with a constant velocity of 40 cm/s along two parallel metal rails through a magnetic field of 0.575 T.
love history [14]

Answer:

2.12/R mW

Explanation:

The electrical power, P generated by the rod is

P = B²L²v²/R where B = magnetic field = 0.575 T, L = length of metal rod = separation of metal rails = 20 cm = 0.2 m, v = velocity of metal rod = 40 cm/s = 0.4 m/s and R = resistance of rod = ?

So, the induced emf on the conductor is

E = BLv

= 0.575 T × 0.2 m × 0.4 m/s

= 0.046 V

= 46 mV

The electrical power, P generated by the rod is

P = B²L²v²/R

=  B²L²v²/R

So, P = (0.575 T)² × (0.2 m)² × (0.4 m/s)²

= 0.002116/R W

= 2.12/R mW

3 0
3 years ago
how long will it take you to travel from rustburg hign school to watch the Devils beat the brookville bees if you live 20 miles
tresset_1 [31]

(20 miles) x ( 1/45  hour/mile) = 

       (20/45) (hour) = <em>

         4/9  hour =    </em>
26 minutes  40 seconds


7 0
2 years ago
How much force would be needed to cause a 4.6kg object to accelerate at 9.2m/s/s? *
poizon [28]

Answer:

<h2>42.32 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 4.6 × 9.2

We have the final answer as

<h3>42.32 N</h3>

Hope this helps you

5 0
2 years ago
Akeem is walking on the beach on a hot summer day. The sand is very hot, so he runs and puts his feet in the water, which is muc
kramer

Sample Response: The water is cooler than the sand because it has a higher specific heat value. This means that it takes longer for the water to increase in temperature, making it feel cooler than the sand, which warms up more quickly.


4 0
3 years ago
Read 2 more answers
Imagine that you replace the block in the video with a happy or sad ball identical to the one used as a pendulum, so that the sa
satela [25.4K]
The sad ball does not rebound after it strikes the block. This means that the collision is inelastic. If two sad balls collide with each other, we can assume completely inelastic collision. Since momentum is conserved, the kinetic energy during the collision would be twice that of each of the ball's, half of the kinetic energy of each ball will be dissipated.
4 0
3 years ago
Read 2 more answers
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