A projectile is fired at an upward angle of 45.0 ∘ from the top of a 170 m cliff with a speed of 180 m/s . What will be its speed when it strikes the ground below? (Use conservation of energy and neglect air resistance.) Express your answer to three significant figures and include the appropriate units.
Answers: 3
Physics, 22.06.2019 01:30
Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor
Answers: 1
Physics, 22.06.2019 12:30
When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)
Answers: 2
Physics, 22.06.2019 12:30
Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?
Answers: 1
A projectile is fired at an upward angle of 45.0 ∘ from the top of a 170 m cliff with a speed of 180...
Mathematics, 19.03.2020 22:06
Mathematics, 19.03.2020 22:06
Computers and Technology, 19.03.2020 22:07
English, 19.03.2020 22:07
Biology, 19.03.2020 22:07
Mathematics, 19.03.2020 22:07
Mathematics, 19.03.2020 22:07