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il63 [147K]
3 years ago
10

A 50kg block slides down a slope that forms an angle of 54 degrees if it is known that when descending it has a force of 40N and

a coefficient of friction of 0.33. What is the acceleration in the block?
Physics
1 answer:
Harrizon [31]3 years ago
3 0

Answer:

The acceleration in the block is 2.1 m/s²

Explanation:

Given that,

Mass = 50 kg

Angle = 54°

Force = 40 N

Coefficient of friction = 0.33

We need to calculate the acceleration in the block

Using balance equation

F_{net}=F_{f}-F\cos\theta

ma=\mu mg\sin\theta-F\cos\theta

a=\dfrac{\mu mg\sin\theta-F\cos\theta}{m}

Put the value into the formula

a=\dfrac{0.33\times50\times9.8\sin54-40\cos54}{50}

a=2.1\ m/s^2

Hence, The acceleration in the block is 2.1 m/s²

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A nuclear fission power plant has an actual efficiency of 32%. If 0.18 MW of power are produced by the nuclear fission, how much
7nadin3 [17]

Answer:

 P₀ = 5.76 x 10⁻² MW

Explanation:

given,

efficiency of the power plant = 32%

Power produced by the nuclear fission = 0.18 MW

the power plant output = ?

using formula of efficiency

\eta = \dfrac{P_0}{P}

where P is the power produced in the power plant

          P₀ is the power output of the power plant

\eta = \dfrac{P_0}{P}

0.32 = \dfrac{P_0}{0.18}

 P₀ = 0.18 x 0.32

 P₀ =  0.0576 MW

 P₀ = 5.76 x 10⁻² MW

Power plant output is equal to  P₀ = 5.76 x 10⁻² MW

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4 years ago
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I need SO much help please!!!!!!!!~!
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Hi,

I've found a link that should assist you or answer your question.
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4 years ago
A car is moving on the distance 35km in the time 30minutes,stays 20 minutes,the it moves again vith the velocite 60km/h in 25 mi
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v = (35)/(1/2)
v = 70 km/h


60 km/h for 25 minutes
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    distance= velocity * time
d =(60) * (25/60)
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Explanation:

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