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A block of mass 0.50kg travels with a speed of 2m/s in the x-direction on a flat, frictionless surface. On passing through the origin, it experiences a constant force of 3N at an angle of 60 degrees relative to the x-axis for 1.5s. What is the velocity of the block at the end of this time?
At the instant before a particle collision at the Belle Experiment, an electron is moving north with a total energy of 8 GeV, find the speed of the electron as seen by the positron
A car movig with an initial velocity of 29.6 m/s decrease to a velocity of 17.9 m/s over a time interval of 4.08 seconds. how far did the car travel during this time
An object explodes and breaks into 2 pieces. Piece 1 has twice the mass of piece 2. Which piece has more momentum
A block of mass 20kg is sliding down an incline plane with no friction. Find the normal force and the acceleration of the object
A string of holiday lights has ten bulbs by equal resistances connected in series. When the string of lights is connected to a 120-V outlet, the current during the bulbs is 0.06 A.
A car is moving south with an absolute velocity of 40 km/h. An observer at O is stationed 50 m to the east of the line of travel. When the car is directly west of the observer, what is the angular velocity relative to the observer? After the car move..
At winter's end, Lake Superior's 82,000-km2 surface is frozen to a depth of 1.3 m. The density of ice is 917 kg/m3. How much energy does it take to melt the ice? If the ice disappears in 3 weeks, what is the average power supplied to melt it?
When a ceiling fan rotating with an angular speed of 2.75 rad/s is turned off, a friction torque of 0.120 N.m slows it to a stop in 22.5s . What is the moment of inertia of the fan?
The field just outside a 3.90 cm radius metal ball is 2.55 102 N/C and points away from the ball. What charge resides on the ball
If the average frequency emitted by a 200,-, rm W light bulb is 5.00 times 10^ {14}, {rm Hz}, and 10.0 percent of the input power is emitted as visible light, about how many visible-light photons are emitted per second.
On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. What is the total kinetic energy of the two blocks
A ladder is leaning against a vertical wall. The coefficient of friction between the ladder and the horizontal surface is u1=1.265, Determine the maximum angle with the vertical the ladder can make
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