A body is at aheight of 81m and is ascending upwards with a velocity of 12m/s. a body of 2 kg weight is dropped from it. if g=10m/s^2. the body will reach the surface if earth in how much time.

In a movie projector in your local cineplex, the frames of film go into the projector a. head first or upside down. b. feet first or right side up.

Light incident on a surface at an angle of 45 degrees undergoes diffused reflection. At what angle will it reflect?

on his fishing trip justin takes the boat 10km south the fish arent biting so he goes 4km back north he follows a school of fish 1km further north what distance did he cover

What three mechanisms may drive tectonic plate movement?

Ms. Prainito uses a digital scale to measure mass. What are the units of her measurement? joules grams meters volts

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission

Why is it possible to throw a 0.145 kg baseball much further than a 7 kg bowling ball?