Homework Answers
Question 1) Given , m = 1200 kg , v = 65 mph
Converting : 65 mph = (65*0.447) m/s = 29.06 m/s
Energy (E) = (1/2)*m*v^2
E = (1/2)*1200*29.06^2
E = 506606.5 J
Conversion : 506606.5 J = 121.08 cal
Since , 1 donut = 250 food calories
Number of units of donuts = 121.08/250 = 0.5 ( half of a donut)
Thus , energy provided by half of a donut is equal to kinetic energy
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instructions I hel Save & Exit Submit Question 1 (of 5) If a donut contains 250...
5. A ball of mass 2 kg is launched into a circular orbit close to the...
5. A ball of mass 2 kg is launched into a circular orbit close to the Earth's surface. Given the mass of Earth is M-5.98 x 1024 kg and its radius is 6.37 x 10 m. Ignoring air resistance, what is the energy required to launch the ball from rest into the orbit?
1 What is the Earth's orbital speed as it orbits the Sun. Take the Earth/Sun distance...
1 What is the Earth's orbital speed as it orbits the Sun. Take the Earth/Sun distance to be 93 million miles (taking the Earth's orbit to be circular), the mass of the Earth to be 5.97 X 102 kg and the mass of the Sun to be 1.987 X 10*0 kg. Solve this problem using Newton's 2nd law directly 2. A 55.7 kg mass is lifted (at a constant velocity) from the ground to a vertical height of 1275 m....
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A rocket carrying a new 945-kg satellite into orbit misfires and places the satellite in an orbit with an altitude of 175 km, well below its operational altitude in low-Earth orbit. (a) What would be the height of the satellite's orbit if its total energy were 450 MJ greater? km (b) What would be the difference in the system's kinetic energy? (Include the sign of the value in your answer.) Mj (c) What would be the difference in the system's...
Can someone help me with this question and show all work 1) Planet Velocities and Energy...
Can someone help me with this question and show all
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4. Use Kepler's Second Law and the fact that L-fxp to determine at which points in...
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please answer all I beg you ASAP! and please try solving most of them thabk you...
please answer all I beg you ASAP! and please try solving most of
them thabk you so much
Question 23 (1 point) At an instant a traffic light turns green, a truck starts with a constant acceleration of 1.8 m/s2. At the same moment a taxi travelling with a constant speed of 8.5 m/s overtakes and passes the truck. Which two equations properly describe the position of the truck and the taxi? a) dtruck = 8.5at dtaxi = 8.5at b)...
5. A ball of mass 2 kg is launched into a circular orbit close to the Earth's surface. Given the mass of Earth is M-5.98 x 1024 kg and its radius is 6.37 x 10 m. Ignoring air resistance, what is the energy required to launch the ball from rest into the orbit?
1 What is the Earth's orbital speed as it orbits the Sun. Take the Earth/Sun distance to be 93 million miles (taking the Earth's orbit to be circular), the mass of the Earth to be 5.97 X 102 kg and the mass of the Sun to be 1.987 X 10*0 kg. Solve this problem using Newton's 2nd law directly 2. A 55.7 kg mass is lifted (at a constant velocity) from the ground to a vertical height of 1275 m....
A rocket carrying a new 945-kg satellite into orbit misfires and places the satellite in an orbit with an altitude of 175 km, well below its operational altitude in low-Earth orbit. (a) What would be the height of the satellite's orbit if its total energy were 450 MJ greater? km (b) What would be the difference in the system's kinetic energy? (Include the sign of the value in your answer.) Mj (c) What would be the difference in the system's...
Can someone help me with this question and show all
work
1) Planet Velocities and Energy (33 pts) We talked about how planet formation involves the collisions of bodies (planetesimals, embryos) leading to the growth (and heating) of a planet. Let's think about the velocities and energies involved here. a) The speed of a body in its orbit around the Sun is given by the equation: Here Vis the speed of the body in m/s, G is the gravitational constant,...
4. Use Kepler's Second Law and the fact that L-fxp to determine at which points in an elliptical orbit around the Sun a planet has maximum and minimum speeds. (Section 13.5 will help.) 5. At the end of example 13.10, there's an "Evaluate" blurb about how inside the surface of the Earth the force of gravity varies proportionally to the distance from the center, and it makes reference to the next chapter. which is about oscillation. Model the motion of...
please answer all I beg you ASAP! and please try solving most of
them thabk you so much
Question 23 (1 point) At an instant a traffic light turns green, a truck starts with a constant acceleration of 1.8 m/s2. At the same moment a taxi travelling with a constant speed of 8.5 m/s overtakes and passes the truck. Which two equations properly describe the position of the truck and the taxi? a) dtruck = 8.5at dtaxi = 8.5at b)...
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