Ask question

Ask question

All categories

2 years ago

13

A block of mass 5 kg is descending with a constant velocity on an inclined plane at 30°. What is the value of the frictional for

ce?

1 answer:

sattari [20]2 years ago

4 0

Answer:28.9N

Explanation:

F=UR R=mg R=5×10 R=50N

U=tan© U=Tan30 U=1/√(3)

F=UR F=1/√(3) ×50

F=28.9N

You might be interested in

weeeeeb [17]

Answer:

I.72m/s²

II.8m/s²

Explanation:

acceleration equal velocity² divided by length

8 0

2 years ago

A transformer has a 240 V primary and a 60 V secondary. With a 5 ohm load connected, what is the primary current?

musickatia [10]

Answer:primary current is 3A

Explanation:

primary voltage Vp=240V

secondary voltage Vs=60V

resistance 5Ω

primary current in the circuit is

$I_{P} =I_{S} \frac{V_{S}}{V_{P}}\\I_{P} =\frac{V_{S}}{R} \frac{V_{S}}{V_{P}}\\I_{P}=\frac{60\times 60}{5\times 240\\}\\I_{P}=3 A$

4 0

3 years ago

A car travels 6 m north for 2 seconds and 8 m south for 5 seconds. What is the car's

Degger [83]

2 m/s. 6+8/2+5 = 14/7 = 2

8 0

1 year ago

Read 2 more answers

What is transferred by all types of waves? A. energy B. electrons C. heat D. matter

djyliett [7]

<span>The question is what do all types of waves transfer. Waves, both mechanical and electromagnetic are disturbances that transfer energy without transporting matter. It doesnt matter wether they are propagating trough a medium or trough vacuum. Therefore the correct answer is A. energy.</span>

3 0

3 years ago

Read 2 more answers

What can you conclude about x-rays compared to microwaves?

Alinara [238K]

It is D. X rays have a shorter wavelength than microwaves.

6 0

2 years ago

Read 2 more answers