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Oksanka [162]
3 years ago
7

Why is specific heat important

Physics
1 answer:
Ad libitum [116K]3 years ago
3 0
Hey!!

here is your answer >>>

Specific heat is the amount of heat required to raise the temperature of a unit substance!. The most common example!. The specific heat of water is 1 !. And, lot of plays and animals live under the water and if the specific heat of the water would be low, then the aquatic organisms would die, but the specific heat is high and it is hard for the sun to increase the temperature!.

Hope my answer helps!
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How do I measure the wavelength/amplitude ​
Dimas [21]

Answer:

The wavelength can always be determined by measuring the distance between any two corresponding points on adjacent waves. In the case of a longitudinal wave, a wavelength measurement is made by measuring the distance from a compression to the next compression or from a rarefaction to the next rarefaction.

Explanation:

Thank me later

8 0
3 years ago
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A football player at practice pushes a 60 kg blocking sled across the field at a constant speed. The coefficient of kinetic fric
avanturin [10]

Answer:

C. 180 N

Explanation:

m = mass of the blocking sled = 60 kg

\mu = Coefficient of kinetic friction = 0.30

f = kinetic frictional force acting on the sled

kinetic frictional force acting on the sled is given as

f = \mu mg = (0.30) (60) (10) = 180 N

F =Force applied

For the sled to move at constant speed, the applied force must be same as the frictional force

F = f\\F = 180 N

6 0
3 years ago
A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 4.00 m/s, and
igor_vitrenko [27]

Answer:

a) Her feet are in the air for 0.73+0.41 = 1.14 seconds

b) Her highest height above the board is 0.82 m

c) Her velocity when her feet hit the water is 7.16 m/s

Explanation:

t = Time taken

u = Initial velocity = 4 m/s

v = Final velocity

s = Displacement

a = Acceleration due to gravity = 9.81 m/s²

v=u+at\\\Rightarrow 0=4-9.81\times t\\\Rightarrow \frac{-4}{-9.81}=t\\\Rightarrow t=0.41\ s

s=ut+\frac{1}{2}at^2\\\Rightarrow s=4\times 0.41+\frac{1}{2}\times -9.81\times 0.41^2\\\Rightarrow s=0.82\ m

b) Her highest height above the board is 0.82 m

Total height she would fall is 0.82+1.8 = 2.62 m

s=ut+\frac{1}{2}at^2\\\Rightarrow 2.62=0t+\frac{1}{2}\times 9.81\times t^2\\\Rightarrow t=\sqrt{\frac{2.62\times 2}{9.81}}\\\Rightarrow t=0.73\ s

a) Her feet are in the air for 0.73+0.41 = 1.14 seconds

v=u+at\\\Rightarrow v=0+9.81\times 0.73\\\Rightarrow v=7.16\ m/s

c) Her velocity when her feet hit the water is 7.16 m/s

6 0
3 years ago
How does the kinetic energy of an object relate to its mass and velocity?
Setler [38]

The kinetic energy of an object is directly proportional to its mass, and to the square of its velocity.

5 0
3 years ago
Question 24
Verizon [17]
Q 24: Newton's first law of motion states that anything that stands still will stay still unless unbalanced force is acted upon that object. Newton's second law of motion states that the velocity of an object changes when subjected to external Force. Newton's third law of motion says that for every action there is an equal and opposite reaction. when bumper cars crash into each other one car goes one way and the other goes the other way.

Q 25: if the bumper cars doubled their Mass the motion would be halfed but if the net force is doubled the motion will double.
8 0
3 years ago
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