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Elanso [62]
3 years ago
15

While hiking in the mountains, tanya observed a narrow and steep valley with a stream at the bottom of it. what most likely caus

ed the valley to first form?
Physics
2 answers:
leva [86]3 years ago
8 0

all of the answers that i have gotten off this website have been false ya'∞ll should be a shamed

Juliette [100K]3 years ago
5 0
Erosion over thousands of millennia from the stream or river in the valley
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The lift does 3000 J of work in 5 seconds. What is the power of the lift?
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Answer:

600

Explanation:

p=Work/time

3000/5=600 is power

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A hockey puck is sliding at a constant rate of 2m/s on a frictionless surface. How fast will the puck be moving after 10 sec
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Korolek [52]
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What is the half life-life of your 100 atoms of Carbon-14?
Naddika [18.5K]

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2 years ago
A disk of radius 10 cm speeds up from rest. it turns 60 radians reaching an angular velocity of 15 rad/s. what was the angular a
stepan [7]

Answer:

a) α = 1.875 \frac{rad}{s^{2} }

b) t = 8 s

Explanation:

Given:

ω1 = 0 \frac{rad}{s}

ω2 = 15 \frac{rad}{s}

theta (angular displacement) = 60 rad

*side note: you can replace regular, linear variables in kinematic equations with angular variables (must entirely replace equations with angular variables)*

a) α = ?

(ω2)^2 = (ω1)^2 + 2α(theta)

15^{2} = 0^{2} + 2(α)(60)

225 = 120α

α = 1.875 \frac{rad}{s^{2} }

b)

α = (ω2-ω1)/t

t = (ω2-ω1)/α = (15-0)/1.875 = 8

t = 8 s

4 0
3 years ago
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