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vazorg [7]
3 years ago
5

Charlie's father built a tree house in their backyard. He constructed a spiral staircase around the tree trunk and installed a l

adder. Which will involve more work in climbing up the tree house from the ground?
Physics
1 answer:
ArbitrLikvidat [17]3 years ago
7 0

Answer:

The spiral staircase will require more work

Explanation:

This is because, work can be calculated as force (which is mass of the individual climbing the stairs in this case) multiplied by distance (or length) of the stairs. The only variable that changes in the work done while climbing any of the two (ladder or spiral staircase) is the distance and it is obvious the length of the spiral staircase will be longer; thus the spiral staircase will involve more work.

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20 degrees F! 0 degrees C is equivalent to 32 degrees F, so 20 degrees F is colder.
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3 years ago
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If matter cannot be created nor destroyed the how was matter created
Assoli18 [71]
It can’t be created nor destroyed although it can be changed from one form to the other

I hope this helps

Have a happy holidays:)
7 0
3 years ago
You throw a bowling ball of mass M and radius 1m has an initial speed v0 down the lane. It has an initial angular velocity of 3v
zhuklara [117]

Answer:

Explanation:

Given

Initial angular velocity \omega_0=\frac{3v_0}{R}

Initial speed u=v_0

Coefficient of kinetic friction \mu _k=0.08

As No external torque is applied therefore angular momentum is conserved

L_i=L_f

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For rolling without slipping v_f=\omega _fR

\frac{2}{5}MR^2\cdot (\frac{3v_0}{R})+Mv_0\cdot R=\frac{2}{5}MR^2\cdot \frac{v_f}{R}+Mv_f\cdot R

\frac{6}{5}Mv_0R+Mv_0R=\frac{2}{5}Mv_fR+Mv_f\cdot R

v_f=\frac{11}{7}v_0

acceleration provided by surface

a=\mu _kg

a=0.08\times 9.8

a=0.784\ m/s^2

Speed of ball after t=2\ s

using v=u+at

v=final velocity

u=initial velocity

\frac{11}{7}v_0=v_0+0.784\times 2

\frac{11}{7}v_0-v_0=0.784\times 2

v_0=2.744\ m/s

thus v_f=\frac{11}{7}\times 2.74

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5 0
3 years ago
Oxygen Supply in Submarines Nuclear submarines can stay under water nearly indefinitely because they can produce their own oxyge
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Answer:

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4 * 96500 C liberates 22.4 L of oxygen

60 * 60 * 0.0200 C will liberate 60 * 60 * 0.0200 *  22.4/4 * 96500

= 1.865 * 10^-4 L

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7. Electrical forces are extremely what
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Answer:

it's extremely strong?

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