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2 years ago

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1. An astronaut in a spacesuit has a mass of 80 kilograms. What is the weight of this astronaut on the surface of the Moon where

the strength of gravity is approximately 1/6 that of Earth? (2 Points)

1 answer:

Andrews [41]2 years ago

8 0

Weight = 80 x (9.8/6) = .... N

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Air bubbles being released when breathing from the mouth

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Answer:

air embolism

Explanation:

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2 years ago

A wave has a frequency of 6 Hz and a speed of 30 m/s. What is the wavelength of the wave?

Helen [10]

Answer:

D. 5m

Explanation:

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λ=30/6=5

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A wrench is accidentally dropped at the top of an elevator shaft in a tall building. (a) How many meters does the wrench fall in

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Answer:

11.25m

Explanation:

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Light in air enter crown glass (n = 1.52) at an angle of 35 degrees. What is the refracted angle?

Dovator [93]

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22.17 degree

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n = 1.52

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Let the angle of refraction is r.

use the Snell's law

n = Sin i / Sin r

Sin r = Sin i / n = Sin 35 / 1 .52

Sin r = 0.37735

r = 22.17 degree

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3 years ago

A 2.8-kg cart is rolling along a frictionless, horizontal track towards a 1.2-kg cart that is held initially at rest. The carts

agasfer [191]

Answer with Explanation:

We are given that

Mass of one cart, $m_1=2.8 kg$

Mass of second cart, $m_2=1.2 kg$

Initial velocity of one cart, $u_1=4.6m/s$

Initial velocity of second cart, $u_2=-2.7 m/s$

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$P=9.64 kgm/s$

b.Velocity of second cart, $v_2$ =0

According to law of conservation of momentum

Initial momentum=Final momentum

$9.64=2.8v_1+1.2\times 0$

$v_1=\frac{9.64}{2.8}$

$v_1=3.44m/s$

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3 years ago