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Cerrena [4.2K]
3 years ago
13

A 0.07-kg lead bullet traveling 258 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted t

o heat that it alone absorbs, what is its temperature change?
Physics
1 answer:
Lubov Fominskaja [6]3 years ago
7 0

Answer:

temperature change is 262.06°K

Explanation:

given data

mass = 0.07 kg

velocity = 258 m/s

to find out

what is its temperature change

solution

we know here

heat change Q is is equal to kinetic energy that is

KE = 0.5 × m× v²   ...........1

here m is mass and v is velocity

KE = 0.5 × 0.07 × 258²

KE = 2329.74 J

and we know

Q = mC∆t     .................2

here m is mass and ∆t is change in temperature and C is 127J/kg-K

so put here all value

2329.74 = 0.07 × 127 × ∆t

∆t = 262.06

so temperature change is 262.06°K

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Human dignity and worth and social justice are
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1. Human dignity  and worth

2. Social justice

3.  Service to humanity

4. Integrity

5. Competence.

The human dignity and self worth value holds that all human beings have intrinsic value, right to well being, right to self fulfillment and control over their own lives.

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8 0
3 years ago
A 34.1-mL sample of benzene at 20.8°C was cooled to its melting point, 5.5 °C, and then frozen at 5.5 °C. Calculate the quantity
posledela

Answer:

4541.8 J

Explanation:

First we find the mass of benzene available

mass = density x volume

         = 0.867 x 34.1

         = 29.5647 g

Then we find the amount of heat transferred by two processes:

heat tranferred = heat lost during temp drop + heat lost during freezing

                         = mcΔT + mL

                         = 29.5647 x 1.74 x (20.8 - 5.5) + 29.5647 x 127

                         = 4541.7883434 J

                         = 4541.8 J

                         

3 0
3 years ago
Read 2 more answers
For what purpose the inclined plane is used?​
Montano1993 [528]

Answer:

Baka makita mo si behati dun

3 0
3 years ago
Some pipes on a pipe organ are open at both ends, others are closed at one end. For pipes that play low-frequency notes, there i
Mila [183]

Answer:

For pipes that play low-frequency notes, the advantage of using a tube which is open at both ends is that it produces sound whose wavelength is just twice the length of the tube but a tube which is open at one end and closed at the other produces sound with a wavelength equal to four times the length of the tube.

Therefore the tube which is open at both ends more suitable for low frequency note.

I hope it helps, please give brainliest if it does.

4 0
3 years ago
2. If an em' of Hg weighs 13.6 g, what is the mass of a cylinder of: Sem and height 20 Cm
Yuri [45]

Answer:

Let the mass of mercury  m= 13.6 gm and volume be V=1cm3.

Now change in volume when it is heated upto 50oC,

ΔV=VαΔT

ΔV=1×1.82×10−4×50

ΔV=91×10−4cm3 

New volume V1=V+ΔV=1.0091cm3

New density ρ=V1m=1.009113.6=13.48gcm−3

Explanation:

Mark me as a brainliest please

8 0
2 years ago
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