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Rasek [7]
3 years ago
14

Pls help i’ll give brainliest if you give a correct answer!!

Physics
2 answers:
barxatty [35]3 years ago
5 0

Answer:

third option is the most accurate

arsen [322]3 years ago
3 0

Answer:

C. The distance traveled by an object at a certain velocity.

Explanation:

YW!

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A 45.0-kg sample of ice is at 0.00°C. How much heat is needed to melt it? For water, Lf=334 kJ/kg and Lv=2257 kJ/kg 
Aleonysh [2.5K]

Heat required to change the phase of ice is given by

Q = m* L

here

m = mass of ice

L = latent heat of fusion

now we have

m = 45 kg

L = 334 KJ/kg

now by using above formula

Q = 45 * 334 * 10^3

Q = 1.5 * 10^7 J

In KJ we can convert this as

Q = 1.5 * 10^4 kJ

so the correct answer is D option

7 0
3 years ago
Read 2 more answers
Welding, cutting, or heating in any enclosed spaces involving which of the following metals should be performed with local exhau
sweet [91]

steal aluminum iron

4 0
3 years ago
A sound wave traveling through dry air has a frequency of 15 Hz, a
Korolek [52]

Answer:

Option B

Explanation:

Speed of a wave is denoted by:

v=fλ

where f is the frequency which is unchanged 15Hz and λ is the new wavelength which is 28m

v=fλ

v=15(28)\\v=420m/s

3 0
3 years ago
Read 2 more answers
What is the most potentially destructive way to deal with stress while at college? a. texting friends back home b. watching TV c
diamong [38]

Answer:

Option (C)

Explanation:

Recreational drugs are usually referred to those drugs or medicines that are legally or illegally used without any prescription given by the doctors. These drugs include marijuana, cocaine, alcohol, nicotine, heroin, and many others. These drugs provide relaxation for a shorter period of time, but using of these substances, it makes an individual addicted to drugs.

So, recreational drugs are one of the most potentially destructive ways to handle stress when a student is in college.

Thus, the correct answer is option (C).

7 0
3 years ago
A car has a momentum of -456 kg*m/s. What direction is it moving?
Solnce55 [7]

backward movement

because momentum = mass × speed

And mass must be in positive value..

so negative value is speed

which moving backward..

6 0
3 years ago
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