3 years ago

It took 50 J to move a shopping cart 5 meters. With what force what is the shopping cart moved

Physics

1 answer:

Rufina [12.5K]3 years ago

7 0

Answer:

10 N

Explanation:

Use the equation W=Fd, where W is the work (in joules), F is the force (in newtons), and d is the distance (in meters).'

$W=Fd\\50=F(5)\\F=10 N$

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Suppose the B string on a guitar is 24" long and vibrates with a frequency of about 247 Hz. You place your finger on the 5th fre

Rudiy27

Answer:

b. E (about 329 Hz)

Explanation:

Given data:

Initial length of the string l1= 24 in

initial frequency f1= 247 Hz

changed length l2= 18 in

Then we have to find the changed frequency f2= ?

We already now that

frequency f ∝ 1/length of the string l

therefore,

$\frac{f_1}{f_2} =\frac{l_1}{l_2}$

⇒ ${f_2}=\frac{l_1}{l_2}\times{f_1}$

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Answer:

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(i) a force of 35.0 n is required to start a 6.0-kg box moving across a horizontal concrete floor, (a) what is the coefficient o

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a. The force applied would be equal to the frictional force.

F = us Fn

where, F = applied force = 35 N, us = coeff of static friction, Fn = normal force = weight

35 N = us * (6 kg * 9.81 m/s^2)

us = 0.595

b. The force applied would now be the sum of the frictional force and force due to acceleration

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35 N = uk * (6 kg * 9.81 m/s^2) + (6kg * 0.60 m/s^2)

uk = 0.533

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3 years ago

0. The volume of a cube is 27cm3. Find the length of edge of cube.

Dennis_Churaev [7]

Answer:

27 cm3

Explanation:

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