An airplane must have a velocity of 50 m/s in order to take off What must be the airplane acceleration if it is in to take off from a runway 50cm long?

1. What is the advantage of transferring masses from one side to the other instead of adding masses to one side?
2. What is the difference between uniform motion (constant velocity) and uniformlyacceleratedmotion?
3. Why should the pulley be as light as possible and nearly frictionless?

A tank 4m long, 3m high, 3m wide is closed except for a small hole at the right top. It contains oil (S=0.83) to a depth of 2m (static). The tank is uniformlyaccelerated to the right at 19.62 m/s^2. What is the max pressure intensity in the tank. Please explain in detail.

An astronaut is being tested in a centrifuge. The centrifuge has a radius of 10 m and, in starting, rotates according to theta = (0.30 rad/s?t? where t is in seconds and theta is in radians. When t = 5.0 s, what are the magnitudes of the astronaut's
(a) rotational velocity,
(b) translational velocity,
(c) tangential accele

A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 4.2 m down a q = 23° incline. The sphere has a mass M = 4.1 kg and a radius R = 0.28 m.
a) Of the total kinetic energy of the sphere, what fraction is translational?
b) What is the translational kinetic energy of the sphere when i

An infinite wire having current I oriented along z-axis passes through a small hole in a uniformly charged infinite plane at z = 0. The current is perpendicular to the charged plane (with charge density σ) . Find the Poynting vector in vacuum and explain the result.

Consider a sphere of radius R and mass M rolling without slipping. Which form of kinetic energy is larger, translational or rotational?
Translational kinetic energy is larger.
Rotational kinetic energy is larger.
Both are equal.
You need to know the speed of the sphere to tell.

The time dependent position of three particles with masses m1=1kg m2=2kg and m3=3kg are:
r1 = (3+2t^2)i + 4j
r2 = (-2+1/t)i +2tj
r3 = i-3t^j
Find the total kinetic energy of the system
The rotational kinetic energy
The total angular momentum
The angular momentum of spin
The total torque

Which one of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement?
a. speed
b. acceleration
c. kinetic energy
d. frequency
7. An object moving in simple harmonic motion has an amplitude of 0.020 m and a maximum acceleration of 40 m/s2. What is the frequency of th

a. What is the highest energy to which alpha particles can be accelerated in a dc accelerator with 3 MV maximum voltage?
b. Calculate the energy of a 1 MeV gamma-ray photon after Compton scattering through 90 degrees.
Please show me a stepwise solution for how to reach the final answer.