The altitude of a hang glider is increasing at a rate of 4.08 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 18.5 m/s when the sun is directly overhead. Find the magnitude of the glider's velocity.

In 1998 using the Keck II Telescope, scientist discover some previously undetected young stars that are only 150 light year from the earth. Suppose a space probe is flown to one of these stars at a speed of 0.98c. The battery that powers the communication system can run for 40years. will the battery still be good, when the space probe reaches the star?show?

There's an issue with this answer. My result can not be greater than one since it wants it in terms of the speed of light. For instance, 0.78c is 78% the speed of light.

Question 8 The star Betelgeuse is about 520 light-years away, If the speed of light were twice its present value, how far away would Betelgeuse be? O 2080 ly O 560 ly O 260 ly O 1040 ly O 130 ly Question 9 Which of the following is the reason for an ocean of water under Europa's frozen surface? O Europa had many icy comets crash into the surface bring water to the moon and melting the water as it fell into the core. O Furopa formed with an unusual amount of liquid water in the core and the coldness of space wasn't able to freeze it. O upiter's strong gravitational force is causing Europa to flex in its orbit, leading to an increase in internal heating. O Europa's close proximity to Jupiter puts it into a gravitational tug-of-war with Jupiter's targest moon Ganymede. Question 10 How was Neptune discovered? O When a large comet broke up and hit the planet, the explosion was seen from Earth-based telescopes O From a large sky survey that identified the "blue-green" planet. O By watching…

Imagine that we had two electrons that were initially VERY far apart, moving towardeach other at nearly the speed of light, roughly 3 x 108 m/s. How close can they get to each other?

(b) Determine the initial speed of the second sled 5)A 72kg man stands on a spring scale in an elevator, starting from rest, the elevator ascends attaining its maximum speed of 1.2m/s in 0.8sec. The elevator travels with this constant speed for 5.0sec undergoes a uniform negative acceleration for 1.5sec, and then comes to rest. What dose the spring scale register:(a) before the elevator starts to move (b) during the first 0.8sec of the elevator ascent (c) while the elevator is traveling at constant speed (d) during the elevator is negative acceleration 6) Two blocks, A and B (with mass 50kg and 100kg respectively), are connected by an inextensible string as shown. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is -0.25. Determine the change in the kinetic energy of block A as it moves from C to D, a distance of 20m up the incline if the system starts from rest. 50kg 137° 1ookg 7) A 90.0kg fullback running East with…

This is particle phy

Which would run slower, a clock at the center of a rotating space habitat or one at the edge? Or would there be no difference?

Find the potential difference required to accelerate protons fromrest to 10% of the speed of light. (Above this speed, relativisticeffects start to become significant.)