PHYSICS HIGH SCHOOL

In 2000, NASA placed a satellite in orbit around an asteroid. Consider a spherical asteroid with a mass of 1.50×1016 kg and a radius of 9.00 km .What is the speed of a satellite orbiting 4.60 km above the surface?

Answers

Answer 1
Answer:

Answer:

8.58 m/s.

Explanation:

Given,

Mass of the asteroid,M = 1.50 x 10¹⁶ Kg

radius = 9 Km

distance of the satellite, r = 4.60 Km

Speed of the satellite  = ?

R = 9 + 4.60 = 13.60 Km

Speed of the satellite rotating in orbit

v = \sqrt{(GM)/(R)}

G is gravitational constant

v = \sqrt{(6.67* 10^(-11)* 1.50* 10^(16))/(13.60* 10^3)}

v = 8.58 m/s

Speed of the satellite is equal to 8.58 m/s.

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You travel 20.0 mph for 0.500 hour, 40.0 mph for 1.00 hour, 30.0 mph for 0.500 hour, and 50.0 mph for 2.00 hours. What is the total distance traveled?

Answers

Speed is (distance)/(time), so because you already know the time(.5 + 1 + .5 + 2 = 4 hours), you want to find the distance traveled.
(Speed)/(time) = ((distance)/(time))/(time)=(distance)/((time)/(time))=distance
So you set it up like this:
(20mph)/(.5\ hour)= 10 miles \n (40mph)/(1\ hour)= 40 miles\n (30mph)/(.5\ hour)= 15miles\n (50mph)/(2\ hours)=100miles \n Add\ them:\n 10+40+15+100=165miles
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A grasshopper jumps and accelerates at 4.5 m/s2. If its legs exert a force of 0.062 N during the jump, what is the mass of the grasshopper?

Answers

Answer:

0.014 kg

Explanation:

trust me its right i took the assessment and got 100%.  :)

F=5560Kg x 2.55m/s². I need help solving this

Answers

Answer:

14178 N

Explanation:

5560 Kg * 2.55m/s^2 = 14178 Newtons (Kg*m/s^2)

which is heavier a one ton box or a one metric ton box? How many pounds heavier is one than the other?

Answers

1 metric ton is bigger than 1 ton. 1 metric ton = 1.102311 tons or 2,204.622 pounds. on ton only = 2,000 pounds.

Which of the following is NOT a model of the solar system?a. Sun-centered
c. Modern view
b. Earth-centered
d. all of the above are solar system models

Answers

Correct answer choice:

B. Earth-centered

Explanation:

Heliocentric theory is the planetary model in which the Earth and planets rotate around the Sun at the focus of the Solar System. Historically, Heliocentric theory was objected to geocentric theory, which set the Earth at the core. This approach was explained in sections by several cosmologists over various times, particularly Aristarchus, Copernicus, Kepler, and Galileo.

Answer:

The correct answer is option b, Earth centered

Explanation:

For the very first it was proposed by Copernicus that it is not the earth but sun which lies at the center of the system and rest all planets revolve around the sun. This sun centered model is known as heliocentric system and is also referred to as the modern view. This model was also helpful in solving two major queries instantly –  

a) Varying brightness of planets

b) Retrograde motion.

How did some U.S. citizens oppose the Vietnam war?Many left the U.S. for Europe.
Many expressed opposition through protest marches.
Many sent supplies to the South Vietnamese.

Answers

They protested by marching in the streets.

Answer:

Many expressed opposition through protest marches.

is the answerd.
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