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3 years ago

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A car is traveling in a straight line at a constant speed. The car's engine is exerting a constant force on the car. Explain why

the car is not accelerating.

1 answer:

kherson [118]3 years ago

5 0

Answer:

because its not going down a long hill instead its going on a leveled street

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An 8.5 kg crate is pulled 5.1 m up a 30 degree incline by a rope angled 17 degrees above the incline. The tension in the rope is

Ulleksa [173]

Answer:

1. a $W_t=746.63 J$

b $E_p=212.415 J$

c $W_n=183.96J$

2. $T_e=99.71J$

Explanation:

a). The work done by the tension is:

$W_t=T*dt$

$dt=\frac{5.1}{cos(17)}$

$W_t=140N*\frac{5.1}{cos(17)}$

$W_t=746.63 J$

b). The work done potential of gravity

$E_p=m*g*h$

$h=5.1*sin(17)$

$E_p=8.5kh*9.8*5.1*sin(30)$

$E_p=212.415 J$

c). The work done by the normal force

$W_n=N*d_n$

$d_n=5.1*sin(30)=2.55$

$W_n=8.5kg*9.8*cos(30)*2.55$

$W_n=183.96J$

2. The increase in thermal energy is:

$T_e=F*d$

$F_k=u_k*m*g=0.271*8.5kg*9.8*cos(30)$

$F_k=19.5N$

$T_e=19.55*5.1m$

$T_e=99.71J$

4 0

3 years ago

If the is the absense of light is the dark. thennnnnnnnnn since there is light particles. is there dark particles?if not then im

TEA [102]

sis
I’m dum too
Have a good day

7 0

3 years ago

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. Strong language often means

san4es73 [151]

I would say that strong language typically reveals strong feelings: strong language would reveal desperation, or very strong feelings: weak feelings would not demand it, and would be more likely accompanied by more controlled behavior.

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3 years ago

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If a water wave completes one cycle in 2 seconds, what is

Novay_Z [31]

The period of a wave is the time it takes the wave to complete one cycle (at a fixed location).

So if a wave completes one cycle in <em>2 seconds</em>, then that is its period.

8 0

3 years ago

Please Help me in this question..

Vlad [161]

Answer:

1 different

Explanation:

2 light

3 sunny

4 a shadow

5dark

<h2 />

8 0

3 years ago