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SCORPION-xisa [38]
2 years ago
9

Carol tries to push a bookshelf across the room. As much as she tries, she can not get the bookshelf to move. Which statement be

st describes why the
bookshelf is not moving?
O
A Carol did not apply enough force to the bookshelf and so the forces are unbalanced.
B. Carol did not apply enough force to accelarate the bookshelf and so the forces are still balanced.
0
C. Carol applied too much force to the bookshelf and now the forces on the bookshelf are balanced
D. Carol applied too much force to the bookshelf and now the forces on the bookshelf are unbalanced
Physics
1 answer:
Anettt [7]2 years ago
7 0

Answer:

B.

Explanation:

Carol did not apply enough force to accelarate the bookshelf and so the forces are still balanced.

Hope this helps!! :)

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You run from your friends house that is 1k away. You then walk home. What distance did you travel?
kolezko [41]

Would would have moved a total distance of 2k, because walking is a slower speed does not change distance

6 0
3 years ago
Question 2 (1 point)
mixer [17]

Answer:

The initial vertical velocity is zero, u = 0 m/s

Explanation:

Given;

height of the table, h = 0.55 m

horizontal distance traveled by the tennis, x = 0.12 m

Apply the following kinematic equation;

h = ut + ¹/₂gt²

where;

u is the initial vertical velocity = 0, since the tennis ball rolled off the edge of a table.

h = ¹/₂gt²

The time to fall from the vertical height is given by;

t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2(0.55)}{9.8} }\\\\t = 0.335 \ s

The initial horizontal velocity of the tennis is given by;

x = vₓt

vₓ = x / t

vₓ = (0.12) / (0.335)

vₓ = 0.358 m/s

Therefore, the initial vertical velocity is zero, u = 0 m/s and initial horizontal velocity, vₓ is 0.358 m/s

3 0
3 years ago
A wave traveling in the positive x-direction with a frequency of 50.0 Hz is shown in the figure below. Find the following values
Klio2033 [76]

Answer:

Explanation:

a. The amplitude is the measure of the height of the wave from the midline to the top of the wave or the midline to the bottom of the wave (called crests). The midline then divides the whole height in half. Thus, the amplitude of this wave is 9.0 cm.

b. Wavelength is measured from the highest point of one wave to the highest point of the next wave (or from the lowest point of one wave to the lowest point of the next wave, since they are the same). The wavelength of this wave then is 20.0 cm. or \lambda=20.0cm

c. The period, or T, of a wave is found in the equation

f=\frac{1}{T} were f is the frequency of the wave. We were given the frequency, so we plug that in and solve for T:

50.0=\frac{1}{T} so

T=\frac{1}{50.0} and

T = .0200 seconds to the correct number of sig fig's (50.0 has 3 sig fig's in it)

d. The speed of the wave is found in the equation

f=\frac{v}{\lambda} and since we already have the frequency and we solved for the wavelength already, filling in:

50.0=\frac{v}{20.0} and

v = 50.0(20.0) so

v = 1.00 × 10³ m/s

And there you go!

5 0
2 years ago
4. A desk with a mass of 10 kg is pushed across a floor with an acceleration of 4 m/s?. What
tatiyna
40 N. If you’re using F=MA MxA would be 10x4 which would get you 40 N
6 0
2 years ago
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An isotope has the same ________, but a different ________ .
Lunna [17]
An isotope is one of the forms of an element that has the same number of protons, but a different number of neutrons.
4 0
3 years ago
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