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Vikentia [17]
3 years ago
13

The heat capacity of 0.125Kg of water is measured to be 523j/k at a room temperature.Hence, calculate the heat capacity of water

Physics
1 answer:
Naily [24]3 years ago
5 0

Answer:

A. 4148 J/K/Kg

B. 4148 J/K/L

Explanation:

A. Heat capacity per unit mass is known as the specific heat capacity, c.

C = Heat capacity/mass(kg)

C = (523 J/K) / 0.125 Kg = 4148 J/K/Kg

B. Volume of water = mass/density

Density of water = 1 Kg/L

Volume of water = 0.125 Kg/ 1Kg/L

Volume of water = 0.125 L

Heat capacity per unit volume = (523 J/K) / 0.125 L

Heat capacity per unit volume = 4148 J/K/L

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What physics principle is used in radar guns to find the speeds of tennis balls and baseballs at sporting events?
Luda [366]
<h2>Answer: Doppler effect </h2>

Explanation:

A radar gun  (also known as a Doppler radar) uses the Doppler effect when measuring "return echoes" after having sent a microwave signal (a type of electromagnetic radiation).  

In this context the Doppler effect consists of the change in a wave perceived frequency when the emitter of the waves, and the observer move relative to each other.  

In the case of radars, a microwave signal is sent to a target (the tennis or baseball in this case) and then is reflected after "hitting" the target, so that the radar system measures this difference between the sent signal and the reflected signal.

6 0
3 years ago
Who wrote the mayflower compact?
Setler79 [48]

esteban Julio ricardo Montoya de la rosa ramirez

4 0
3 years ago
1) A plane whose airspeed is 220 km/h heads due
patriot [66]

Answer:

=(220^2 +150^2)

/

put this on a square root

for you to get 266.2705391

round it to a whole number =266km/h

Explanation:

p

4 0
3 years ago
Corbin, an avid skier leaves the horizontal end of a ramp with a velocity of 33.0 m/s and lands 63.0 m from the base the ramp. H
ahrayia [7]

Answer:

 Height of ramp = 17.49 m

Explanation:

  We have equation of motion , s= ut+\frac{1}{2} at^2, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

 Considering horizontal motion of skier

      Initial velocity = 33 m/s, Displacement = 63 m, acceleration = 0 and we need to find time taken to reach ground by the skier.

    63= 33t+\frac{1}{2} *0*t^2\\ \\ t=1.909seconds

The vertical distance traveled in 1.909 seconds is the height of  ramp

      Initial velocity = 0 m/s, acceleration = acceleration due to gravity =  9.8 m/s^2, time = 1.909 s and we need to find displacement.

      s= 0*1.909+\frac{1}{2} *9.8*1.909^2\\ \\ s=17.49 m

    So height of ramp = 17.49 m

5 0
3 years ago
Technician A says that OAT type coolant should be changed every 2 years. Technician B says that IAT type coolant should be chang
Andru [333]

Answer:

Technician B is correct i-e IAT type coolant should be changed every 2 years.

Explanation:

Coolant is one of the most important fluid for the car as it prevents the engine from overheating during summers and freezing during winters. What it does is that it actually lowers the freezing point during summers and increases the boiling point of the system during summers. There are different types of coolant used by different cars. Among which, two of them are:

1) OAT i-e Organic Acid Technology

2) IAT i-e Inorganic Additive Technology  

IAT type coolants are usually used by older cars and generally should be usually replaced every 2 years. While, the other type which is the OAT type coolant should be replaced every 5 years.

Thus, Technician B is correct i-e IAT type coolant should be changed every 2 years.

5 0
3 years ago
Read 2 more answers
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