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A person walks first at a constant speed of 2.3 m/s along a straight line from Point A to Point B and then back along the line from B to A at a constant speed of 5.6 m/s. What is:
(a) her average speed over the entire trip? (Use at least 3 decimal places.)(b) her average velocity over the entire trip?
Two equally charged, 1.00 {rm g} spheres are placed with 2.00 {rm cm} between their centers. When released, each begins to accelerate at 225 {rm m/s^2}. What is the magnitude of the charge on each sphere.
A spherical blackbody radiator has a temperature of 159°C. Its radius is 0.253 m. what is the net rate of energy radiated from the sphere?
A projectile of mass 1.8 kg approaches a stationary target body at 4.8 m/s. What is the magnitude of the momentum of the target body after the collision
the two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 rm nm red and 486 rm nm
An iron block of unknown mass is heated to 200 degrees Celsius. It is then placed on a 500 gram block of ice at zero degrees Celsius. What is the mass of the iron block
A circular-motion addict ofmass 85 kg rides aFerris wheel around in a vertical circle of radius 10 m at aconstant speed of 5.9 m/s. What is the period of the motion?
Assume you are a medieval knight attacking a castle with a cannon. The cannonball leaves the cannon with a speed of 40.7 m/s, What is the time of flight of the cannonball
A car is traveling along a straight road at a velocity of +34.0 m/s when its engine cuts out. Find the velocity of the car at the end of the initial ten-second interval
question1find out the normal force for a laundry basket with a mass of 3.4 kg in each of the following situationsa at
at the science olympiad competition a group of middle school students uses a trebuchet that launches a tennis ball from
A circular coil of wire of 200 turns and diameter 2.0 cm carries a current of 4.0 A. What is the magnetic torque on the coil
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
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