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1) A projectile is shot horizontally at 65.3 m/s from the roof of a building 24.4 m tall.
(a) Determine the time necessary for the projectile to reach the ground below.
(b) Determine the distance from the base of the building that the projectile lands.
(c) Determine the horizontal and vertical components of the velocity just before the projectile reaches the ground.
A .228g wires are stretched between two points 77.20 cm apart. The tension in the wire is 618N. Find the frequency of the first harmonic. Reply in units of Hz.
A skier of mass 62.00 kg is pulled up a slope by a motor-driven cable. (a) Explain how much work is required to pull him 55.00 m up a 30° slope (assumed frictionless) at a constant speed of 3.40 m/s?
A nucleus of the boron-11 isotope consists of five protons and six neutrons. evaluate the magnitude and direction of the electric field
two point charges each have a value of 30.0 mC, compute the electric field midway between the two charges
Because of your knowledge of physics, you head your boat 44° west of north and have a velocity of 8.0 m/s due north relative to the shore. Illustrate w hat is the velocity of the current? What is your speed relative to the water.
A thin uniform rod (length = 2.01 m, mass = 3.11 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
Consider a solid that sublimes (goes from solid to gas) at 300K. In the solid phase, the molecules have six degrees of freedom and u0=-0.15 eV, What is the latent heat of sublimation in joules per mole
A K+ ion and a Cl ion are directly across from each other on opposite sides of a membrane 8.9 nm thick. What is the electric force on the K+ ion due to the Cl ion? Ignore the presence of other charges. What direction will it go in relation to the ..
How much heat does it take to enhance the temperature of 8.00 of an ideal monatomic gas from 22.0 to 61.0 if the gas is held at constant volume.
An airplane has a speed 560 km/h. If a wind begins blowing from the southwest at a speed of 86.3 km/h, what will be the angle of west of south
A wire with a resistance of 5.1 ? is drawn out through a die so that its new length is 3 times its original length. Find the resistance of the longer wire
A helium-neon laser intended for instructional use operates 7.5 mW. Find out the maximum value of the electric field at a point where the cross sectional area of beam is 10 mm.
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