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3 years ago

Which of the following terms best describes why a skier sliding down a hill eventually comes to a stop?

2 answers:

6 0

Acceleration means you go faster
inertia means it has a tendency to do nothing or remain unchanged
gravity is what pulls things down to earth
<span>Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
so i would say friction</span>

snow_lady [41]3 years ago

5 0

D. Friction because friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. The friction between the two surfaces converts kinetic energy into thermal energy.

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If the charges attracting each other in the preceding problem have equal magnitudes,show that the magnitude of each charge is 2.

Schach [20]

Answer:

The magnitude of each charge is $2.82\times10^{-6}\ C$

Explanation:

Suppose the two point charges are separated by 6 cm. The attractive force between them is 20 N.

We need to calculate the magnitude of each charge

Using formula of force

$F=\dfrac{kq^2}{r^2}$

Where, q = charge

r = separation

Put the value into the formula

$20=\dfrac{9\times10^{9}\times q^2}{(6\times10^{-2})^2}$

$q^2=\dfrac{(6\times 10^{-2})^2\times20}{9\times10^{9}}$

$q=\sqrt{\dfrac{(6\times 10^{-2})^2\times20}{9\times10^{9}}}$

$q=2.82\times10^{-6}\ C$

Hence, The magnitude of each charge is $2.82\times10^{-6}\ C$

6 0

3 years ago

How is light being described?

Slav-nsk [51]

Light is described as both wave as well particle because light behave as wave in phenomenon like diffraction, interference, refraction, Doppler effect, etc whereas it behave as a particle in phenomenon like photoelectric effect, etc. Hope this helps.

7 0

3 years ago

Example 2: a horizontal cylindrical drum is 2.00 m in diameter and 4.00 m in length. the drum is partially filled with benzene (

sesenic [268]

To find the mass of benzene, we must first solve for the volume of benzene inside the cylindrical drum. To calculate the volume of the partially filled cylindrical drum, refer to the working formula below:

Volume = L {(R^2)cos-1[(R-H)/R)] - (R-H)(2RH-H^2)^0.5}

Where:
L = length of the drum = 2 meters
R = radius of the drum = 4 meters
H = height of the liquid = 0.85 meter

substituting the given to the formula, we get

Volume = 5.087 m3

To solve for the mass of benzene, we must multiply the volume with the density.

Density = 0.879 g/cm3 or 879 kg/m3

Mass of benzene = Volume x Density
Mass of benzene = 5.087 x 879 = 4,471.5 kg

<em>ANSWER: Mass of benzene = 4,471.5 kg</em>

7 0

2 years ago

Read 2 more answers

Hello please help i’ll give brainliest

andriy [413]

Answer:

It should be (A few centimeters per year) About three to five centimeters

5 0

3 years ago

What lead does to X rays?

Arturiano [62]

Lead shielding refers to the use of lead as a form of radiation protection to shield people or objects from radiation so as to reduce the effective dose. Lead can effectively attenuate certain kinds of radiation because of its high density and high atomic number; principally, it is effective at stopping gamma rays and x-rays.

7 0

3 years ago