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How are chemical and physical changes different. What are some demonstrations that you might do to help your students differentiate between a chemical and physical change?
A rocket is fired at a speed of 82.0 m/s from ground level, at an angle of 31.0 ° above the horizontal. The rocket is fired toward an 6.95-m high wall, which is located 18.0 m away.
question a cord attached to a cart that can slide along a frictionless horizontal rail aligned along an x axis. the
The detector has a surface area of 0.012m^2. An average human has a surface are of approximately 3.3m^2. Use these facts to determine the approximate number of radioactive counts an average human will recieve in a day.
A fighterjet is launched from an aircraft carrier with the aidof its own engines and a steam powered catapult. What is the work done on the jet by the catapult
A 500 kg cannon fires a 4.0 kg projectile with a velocity of 500 m/s relative to the ground. What is the recoil speed of the cannon
Three particles, each with a charge of 6.35 μC and a speed of 305.0 m/s, enter auniform magnetic field whose magnitude is 0.205 T. What is the magnitude of the magnetic force on particlea?
A mass is oscillating with amplitude A at the end of a spring. How far (in terms of A) is this mass from the equilibrium position of the spring.
A hockey player (76 kg) and a puck (0.2 kg) start out at rest on an ice rink. determine how fast the player will recoil after the slap shot
A copper-constantan thermocouple generates a voltage of 4.55 10-3 volts when the temperature of the hot junction is 103.4° C, what is the temperature of the hot junction when the voltage is 1.94 10-3 volts
Assuming that the work-energy theorem applies, and the initial kinetic energy of the block is 0.0124 J, what is its final kinetic energy.
Three point masses are connected by a massless rod and rotate about the x axis with an angular speed of 1.5 rad/s as shown in the figure. Find the Angular Momentum of this system
Find out the distance between the point of firing and the point at which the 2.6-kg fragment strikes the ground.
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