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MAXImum [283]
3 years ago
8

Your backpack has a mass of 8 kg. You lift it from the ground to a height of

Physics
1 answer:
motikmotik3 years ago
3 0

Answer:

the answer will be 5.6 j..

hope you like the answer.....

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3 years ago
What is the unit of frequency
Phantasy [73]

Answer:

hertz (Hz)

The number of periods or cycles per second is called frequency. The SI unit for frequency is the hertz (Hz).

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2 years ago
What does a plant such as grass need to grow?
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Answer: it needs to function using energy from sunlight, carbon dioxide from the air and water from the soil.

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3 years ago
Pete Zaria works on weekends at Barnaby's Pizza Parlor. His primary responsibility is to fill drink orders for customers. He fil
laila [671]

Answer:

W_n_e_t=7.648512 \approx 7.6J

K.E=0.8J

v=0.7844645406 \approx 0.78m/s

Explanation:

From the question we are told that

Mass of pitcher   M= 2.6kg

Force on pitcher f=8.8N

Distance traveled 48cm=>0.48m

Coefficient of friction \mu=0.28

a)Generally frictional force is mathematically given by

F=\mu N

F=0.28*2.6*9.8

F=7.1344N

Generally work done on the pitcher is mathematically given as

W_n_e_t=W_f+W_F

W_f=8.8*0.48=>4.224N\\W_F=7.1344*0.48=>3.424512N

W_n_e_t=4.224-3.424512

W_n_e_t=0.799488\approx 0.8J

b)Generally K.E can be given mathematically as

K.E= W_n_e_t

Therefore

K.E=0.8J

c)Generally the equation for kinetic energy is mathematically represented by

K.E=1/2mv^2

0.8=1/2mv^2

Velocity as subject

v=\sqrt{\frac{K.E*2}{m} }

v=\sqrt{\frac{0.8*2}{2.6} }

v=0.7844645406 \approx 0.78m/s

6 0
3 years ago
How do creepers explode
Nataliya [291]

Answer:

From you getting close to them

Explanation:

Because its big brain time.

6 0
3 years ago
Read 2 more answers
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