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oksano4ka [1.4K]
4 years ago
8

PLEASE HELP ME on this question.

Physics
1 answer:
VladimirAG [237]4 years ago
4 0
The second one is the answer
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Fill in the blank. When using a wrench if you double the length of the wrench (effort arm), you have ______ the required force t
OlgaM077 [116]

Answer:

halved

Explanation:

the formula

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3 years ago
Name the three strata of study within the study of kinesiology define each and provide examples
Ket [755]
The three strata of study within the study of kinesiology are:
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7 0
4 years ago
What is the speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy?
KATRIN_1 [288]

Answer:

v=53.3m/s

Explanation:

Ek=1/2mv²

7.81×10⁴=1/2×55.0v²

v= the square root of 7.81×10⁴/0.5×55.0

v=53.3m/s

5 0
4 years ago
Why earth have gravity​
enot [183]

Answer:

Because it has mass.

Explanation:

8 0
3 years ago
A cable passes over a pulley. Because the cable grips the pulley and the pulley has nonzero mass, the tension in the cable is no
topjm [15]

Answer:

\alpha=214.8 rad/s^2

Explanation:

We are given that

F_1=137 N

F_2=43 N

Net force=F=F_1-F_2=137-43=94 N

Mass,m=1.21 kg

Radius,r=0.723 m

We have to find the magnitude of its angular acceleration.

Moment of inertia ,I=\frac{1}{2}mr^2

Substitute the values

Torque ,\tau=I\alpha

F_{net}\times r=\frac{1}{2}mr^2\alpha

\alpha=\frac{2F_{net}}{mr}

\alpha=\frac{2\times 94}{1.21\times 0.723}

\alpha=214.8 rad/s^2

4 0
3 years ago
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