What is in the universe

Explain Kepler's second law in detail with figures.

A shampoo advertized in your favorite magazine claims to have a secret ingredient that will make your hair thicker and shinier how could you test the claim?

Find the force necessary to start the crate moving, given that the mass of the crate is 32 kg and the coefficient of static friction between the crate and the floor is 0.55.

Declination of a star is similar to Earth's: latitude longitude rotation inclination

A block is given an initial velocity up an inclined plane with friction. The block comes to rest before the end of the inclined plane. What is the sign of the work done by gravity as the block comes to rest on the inclined plane?

If the Sun were twice as massive, its pull on Mars would be A. unchanged. B. twice. C. half. D. four times as much.

A pendulum makes 40 vibrations in 20 seconds. Calculate its period?

A construction crane lifts a prestressed concrete beam weighing 14 short tons from the ground to the top of piers that are 24 ft above the ground. Determine the amount of work done considering the beam. Take the value of g as 32.174 ft/s2.

Are passing through optical Centre deviate why

5) A student is trying to decide what to wear. His bedroom is at 20.0°C. His skin temperature is 35.0°C. The area of his exposed skin is 1.50 m2. People all over the world have skin that is dark in the infrared, with emissivity about 0.900.