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Billy throws a ball straight up and it rises 22 meters into the sky. With what initial velocity must he have thrown the ball
An alpha particle has twice the charge of a beta particle. Why does the former deflect less than the later when passing between electrically charged plates, What particles make up the nucleus of an
A perfectly reflecting flat mirror is uniformly illuminated by light striking it perpendicularly. Calculate the intensity of the light
Sunlight, with an intensity of 657 W/m2, strikes a flat collecting surface perpendicularly and is totally absorbed. find the force in micronewtons that acts on the surface
The weins displacement law tells us that when an object is heated to incandesence it will If the nail seems to give off a maximum of light in the 630 nm region
A 0.05 kg bullet traveling at 600 m/s hits a 7.4 kg block of wood and stays in the wood. What is the velocity (speed)of the wood block
An aircraft weighing 865 N is accelerated at 7 m/s/s for 8 seconds, How much work was done on the aircraft
The catapult on an aircraft carrier can take an aircraft from 0 to 216 mph in 8 seconds, at which time the aircraft launches
The catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 84.1 m/s in 9.3 seconds, What is the acceleration of the aircraft
Red laser light of 630 nm is incident upon a diffraction grating. determine the angle from the incident ray of the first diffracted ray
You have a ball on a wire that is twirled in a circular orbit with a radius of 3.7 m, What is the speed of the ball in orbit
As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. how long must the engines be fired
An ultralight plane and pilot have a total mass of 150 kg. what is the net force acting on the plane and pilot
A series circuit is made up of a 400 ohm resistor, a 3 henry inductor and a 8 microfarad capacitor all placed in series. Determine the steady state current flowing in this circuit
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
As a baseball is being caught, its speed goes from 25 to 0 m/s in 0.008 seconds. What is the force acting on the ball
At the one meter mark a +1 coulomb charge is placed. At the two meter mark a -1 Coulomb is placed. Determine the electric field at the zero meter point
A hare and a tortoise compete in a race over a straight course 2.25 km long. The tortoise crawls at a speed of 0.180 m/s toward the finish line. For how long in time was the hare stationary
An empty storage tank has a volume of 135 ft3. What is the buoyant force exerted on it by the air
The total mass of helium in a balloon is 131 kg. What is the volume of the balloon
Use Pascal's principle. Given that Fout is 87 lb., the areas of the output and input cylinders are Aout 29 in2 and Ain 6 in2, what is the input force
A person with a weight of 241 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
A viewing window in the Atlanta aquarium is 67 inches wide and 43 inches high. what is the outward force on the window
The water in a tank is at a gauge pressure of 283,685 Pa. what is the force on the bottom of the tank
A wheel of mass m = 16kg and radius r = 0:5m is connected to a motor that causes it to attain rotational speed of w = 20rads^-1 in 10s, What is the average torque applied to the wheel by the motor