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Q. What is the magnitude of the force (in N) on an electron moving with a velocity v = 4.82 x10^6 m/s at right angles to a magnetic field B = 4.8 x10-2 T?
Q. A race car can be slowed with a steady acceleration of -11 m/s2 if the car is going 55m/s how many meters would it travel before it stops?
A baseball pitcher throws a fastball at a speed of 35m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it throughout an almost straight-line distance of 3.7 m. estimate the acceleration, assuming that it is constant ..
A spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of sphere: V(4/3) pieR^3?
A pendulum is 1.20 metres long. What is the speed of the bob when it passes by its equalibrium position if it is pulled aside until it makes an angle of 25 degrees to vertical.
Assume that a 16.5 m/s wind is blowing across the roof of your house. The density of air is 1.29 kg/m3. Conclude the reduction in pressure (below atmospheric pressure of stationary air) that accompanies this wind.
A certain superconducting magnet in the form of a solenoid of length 0.30 m can produce a magnetic field of 13.0 T in its core when its coils carry a current of 105 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find o..
The coefficient of volume expansion of coffee is the same as that of water. How much coffee (in cubic meters) has spilled out of the beaker.
finding the thermal conductivity (k) of a box with total surface area of 1.20 m and a wall thickness of 4cm is made of an insulating material. a 10 W electric heater inside the box maintain the inside temp. at 15 C above the outside temp.
Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Typically, hip's speed at impact is about 2. If this can be reduced to 1.30 or less, hip will usually not fracture. One way to do this is by wearing elasti..
Consider a 10-kg block resting on a frictionless plane inclined 30 o connected by a rope through a pulley to a 10-kg block hanging free. What is the direction and magnitude of the resulting acceleration of the 2-block system?
A car travels at a constant speed around the circular track or a radius of 2.6 km. it goes around the track once in 360 seconds.
What is the total mass of the reagents used in the combustion throughout the 30 days . The ball makes 17 oscillations in 16 seconds. What is it the mass of the ball.
Both teenagers pull with a force of 55 at an angle of 35 relative to the forward direction, that is the direction of motion. In addition, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magn..
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