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blondinia [14]
2 years ago
13

A sprinter starts from rest, and reaches their top speed of 12 m/s in 3 seconds.

Physics
1 answer:
mezya [45]2 years ago
4 0

Answer:

there u go :)

Explanation:

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Place the following into scientific notation...(.000635)<br> *
AleksAgata [21]
6.35x10^-4 OR 6.3x10-4 (if only one decimal number is allowed)
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Balanced forces acting on an object cause the object to accelerate. Please select the best answer from the choices provided T F
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False
Balanced forces mean that there is no net force acting on the object. therefore, the object will not accelerate.
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What’s 4.5 inches into centimeters?
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Answer:

11.43 cm

Explanation:

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3 0
3 years ago
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An object is 15 cm in front of a diverging lens with a
Rainbow [258]

A) See ray diagram in attachment (-6.0 cm)

By looking at the ray diagram, we see that the image is located approximately at a distance of 6-7 cm from the lens. This can be confirmed by using the lens equation:

\frac{1}{q}=\frac{1}{f}-\frac{1}{p}

where

q is the distance of the image from the lens

f = -10 cm is the focal length (negative for a diverging lens)

p = 15 cm is the distance of the object from the lens

Solving for q,

\frac{1}{q}=\frac{1}{-10 cm}-\frac{1}{15 cm}=-0.167 cm^{-1}

q=\frac{1}{-0.167 cm^{-1}}=-6.0 cm

B) The image is upright

As we see from the ray diagram, the image is upright. This is also confirmed by the magnification equation:

h_i = - h_o \frac{q}{p}

where h_i, h_o are the size of the image and of the object, respectively.

Since q < 0 and p > o, we have that h_i >0, which means that the image is upright.

C) The image is virtual

As we see from the ray diagram, the image is on the same side of the object with respect to the lens: so, it is virtual.

This is also confirmed by the sign of q in the lens equation: since q < 0, it means that the image is virtual

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kvv77 [185]

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friction reduces the efficiency of machines, thus we must reduce the friction force that is acting upon it.

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