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Brilliant_brown [7]
3 years ago
9

The temperature of a 700.96 gram piece of metal falls 120⁰C and in the process releases 2001 Joules of energy. What is the speci

fic heat of the piece of metal?
Physics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

The specific heat for the metal is 0.466 J/g°C.

Explanation:

Given,

Q = 1120 Joules

mass = 12 grams

T₁ = 100°C

T₂ = 300°C

The specific heat for the metal can be calculated by using the formula

Q = (mass) (ΔT) (Cp)

ΔT = T₂ - T₁ = 300°C  - 100°C   = 200°C

Substituting values,

1120 = (12)(200)(Cp)

Cp = 0.466 J/g°C.

Therefore, specific heat of the metal is 0.466 J/g°C.

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8 0
3 years ago
A hockey player makes a slap shot exerting a constant force of 40.0 newtons on the puck for .2 seconds. What is the magnitude of
Taya2010 [7]

Answer:

Magnitude of impulsive force is <u>8 N.s</u>.

Explanation:

Given:

Force acting on the puck is, F=40.0\ N

Time interval for which the force acts is, \Delta t=0.2\ s

We are asked to find the impulsive force.

Impulsive force acting on a body is the sudden change in the momentum of the body due to the application of a large constant force for a very small interval of time.

Here, the hockey player applies a large force of 40 N for a very short interval of time. So, the impact on the puck is measured as Impulse and is represented by 'J'.

Impulse in terms of applied force and time interval is given as:

J=F\Delta t

Plug in the given values and solve for 'J'. This gives,

J=40\times 0.2\\J=8\ N\cdot s

Therefore, the magnitude of impulsive force is 8 N.s.

6 0
2 years ago
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Answer:

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8 0
2 years ago
A glass prism causes dispersion or deviation but glass plate doesn't.why?​
avanturin [10]

Answer:

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7 0
2 years ago
HELP PLEASE!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (20pts)
anyanavicka [17]

Explanation:

potential energy =360800J

mass(m)=?

height (h)=25m

g=9.8m/s²

we have

potential energy =360800J

mgh=360800J

m×9.8×25=360800

m=360800/(9.8×25)=1472.653061kg

8 0
3 years ago
Read 2 more answers
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