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Anna [14]
3 years ago
14

Is it frictional force?​

Physics
1 answer:
Oduvanchick [21]3 years ago
6 0

Answer:

yes it is a friction force..

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What is the effect of sunlight on the earth? A. Sunlight warms the earth evenly. B. Sunlight warms the poles more than the equat
Vera_Pavlovna [14]
C) <span>Sunlight warms the earth unevenly.</span>
7 0
3 years ago
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Using a common metric ruler, you measure the separation distance between two Al spheres from center to center to be 2.3 cm. What
Reptile [31]

Answer: 0.5 mm

Explanation: The smallest division that a common ruler has is 1 mm so any measurement taken is approximately accurate to a mm.

Uncertainty of any measuring instrument is the inaccuracy or lost of precision that occur due to its less divisions in an instrument

Uncertainty= Least Count /2

Uncertainty= 1 mm /2

Uncertainty= 0.5 mm

it means that measurement can be 2.3cm ± 0.5mm

8 0
3 years ago
PLS HELP! A boy drops a ball from an observation tower. The ball hits the ground in 3.0 s. What is the ball's velocity at the ti
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v = u + at

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4 0
3 years ago
Calculate the frequency of a wave using an equation​
Gemiola [76]

Answer:

1. f=1T. where: f is the frequency of the wave in hertz. T is the period of the wave in seconds.

2. f=vλ where: f is the frequency of the wave in hertz. v is the velocity of the wave in meters per second. λ is the wavelength of the wave in meters

3. f=cλ

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8 0
3 years ago
A high-speed train travels 480 km from Paris to Grenoble, France, at an average speed of 180 km/h. How long will it take to reac
hichkok12 [17]
The time (t) it will take for the train to reach to Grenoble is the quotient when the distance (d) is divided by the speed (s). That is,
                                       t = d / s
Substituting the known values,
                                       t = 480 km / 180 km/h
                                      t = 2.667 h
Thus, it will take approximately 2.7 h to reach Grenoble. The answer is letter D. 
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3 years ago
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