The satellite is guided to a circular orbit about the sun at the same distance from the sun as the earth (1.5x10^11 m), but far away from the earth (so only the sun’s gravity is important). the satellite is the stopped using orbital thrusters and allowed to fall to the sun. what is the satellite’s speed when it reaches the surface of the sun? the sun has a mass of 2.0x10^30 kg and a radius of 7.0x10^8 m.

hint: use energy conservation. first consider the potential energy when it is at the earth’s orbit, then equate this to the sum of the potential energy at the surface of the sun and the kinetic energy at the surface of the sun.

a.
4.4x10^5 m/s

b.
6.2x10^5 m/s

c.
it will be going infinitely fast.

d.
3.8x10^11 m/s

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.

From the perspective of an employee that effective channeling of work related information and concerns

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.