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viva [34]
3 years ago
14

Dean Potter is known for slacklinging across a 915 metter deep ravine in Yosemite National Park with no safety gear. If his mass

is 77 kg, how much potential energy did he have?
Physics
1 answer:
Natasha2012 [34]3 years ago
8 0

Explanation:

answer 689910

M x G x H

mass = 77

G= 9.8

Meter = 915 this is the height

77 x 9.8= 754.6

754.6 X 915 = 689910 J

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Answer:

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Susan's 12.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30∘ above the
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Answer:1.71 m/s

Explanation:

Given

mass of Susan m=12 kg

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coefficient of Friction \mu =0.18

Resolving Forces Along x axis

F_x=T\cos \theta -f_r

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since there is no movement in Y direction therefore

N=mg-T\sin \theta

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Thus F_x=T\cos \theta -\mu N

F_x=29\cos (30)-\0.18\times (12\times 9.8-29\sin (30))                

F_x=25.114-18.558

F_x=6.556 N

Work done by applied Force is equal to change to kinetic Energy

F_x\cdot x=\frac{1}{2}\cdot mv_f^2-\frac{1}{2}\cdot mv_i^2

6.556\times 2.7=\frac{1}{2}\cdot 12\times v_f^2

v_f^2=\frac{6.556\times 2.7\times 2}{12}

v_f^2=2.95

v_f=1.717 m/s        

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3 years ago
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For an object to be in static equilibrium, the net force must be equal to zero and and The center of gravity must be above the s
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The normal force must equal the weight.

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The magnetic field lines of a bar magnet spread out from the north end to the south end. South end to the north end. Edges to th
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<h3><u>Answer;</u></h3>

the north end to the south end.

<h3><u>Explanation;</u></h3>
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3 years ago
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