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A 5 kg block slides 10 m with friction force 20 N. Work done by friction?
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Question
Asked 49 days ago|1/26/2026 8:22:43 AM
Updated 49 days ago|1/26/2026 8:38:23 AM
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A 5 kg block slides 10 m with friction force 20 N. Work done by friction?
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User:
A 5 kg block slides 10 m with friction force 20 N. Work done by friction?
Weegy:
Friction is a force that is created whenever two surfaces move or try to move across each other.
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Question
Asked 49 days ago|1/26/2026 8:22:43 AM
Updated 49 days ago|1/26/2026 8:38:23 AM
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3
cruz30
W = Fd cos(180) = 20(10)(-1) = -200 J
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Added 49 days ago|1/26/2026 8:38:21 AM
This answer has been confirmed as correct and helpful.
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Questions asked by the same visitor
A 2 kg object experiences a net force of 10 N. What is its acceleration?
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Question
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Updated 49 days ago|1/26/2026 8:37:55 AM
1 Answer/Comment
3
cruz30
F = ma
a = F/m = 10/2 = 5 m/s^2
Added 49 days ago|1/26/2026 8:37:55 AM
This answer has been confirmed as correct and helpful.
A 0.2 kg ball is thrown at 15 m/s. Find momentum.
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Question
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Updated 49 days ago|1/26/2026 8:46:09 AM
2 Answers/Comments
3
cruz30
p = mv = 0.2 × 15 = 3 kg·m/s
Added 49 days ago|1/26/2026 8:45:53 AM
This answer has been confirmed as correct and helpful.
3
Flora1988
Momentum = mass × velocity = 0.2 kg × 15 m/s = 3 kg m/s.
Added 49 days ago|1/26/2026 8:46:09 AM
This answer has been confirmed as correct and helpful.
A 2 kg object at 10 m height. Potential energy?
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Question
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Updated 49 days ago|1/26/2026 8:45:20 AM
1 Answer/Comment
3
cruz30
PE = mgh = 2(9.8)(10) = 196 J
Added 49 days ago|1/26/2026 8:45:20 AM
This answer has been confirmed as correct and helpful.
A 50 W bulb works for 2 hours. Energy used?
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Updated 49 days ago|1/26/2026 8:45:04 AM
1 Answer/Comment
3
cruz30
E = Pt = 50 × (2×3600) = 360000 J
Added 49 days ago|1/26/2026 8:45:04 AM
This answer has been confirmed as correct and helpful.
A sound wave has intensity 1×10 W/m². Sound level?
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Updated 49 days ago|1/26/2026 8:44:47 AM
1 Answer/Comment
3
cruz30
= 10 log10(I/I0) = 10 log10(10^-6 / 10^-12)
= 10 log10(10^6) = 60 dB
Added 49 days ago|1/26/2026 8:44:47 AM
This answer has been confirmed as correct and helpful.
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