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The ball is leaves the kicker's foot at an angle of 51° above the ground with a velocity of 17.0 m/sec. Determine the horizontal and vertical components of the launch velocity.
The potential difference between two parallel conducting plates in vacuum is 600 V. An alpha particle with mass of 6.50×10-27 kg and charge of 3.20×10-19 C is released from rest near the
An object is placed in front of a concave mirror, 23.0 cm from the mirror's focal point. The image formed by the mirror is three times farther away from the focal point. Calculate the focal length
A rocket moves upward, starting from rest with an acceleration of 33.4 m/s2 for 3.47 s. It runs out of fuel at the end of the 3.47 s but does not stop. How high does it rise above the ground?
If you exert 20.0N of horizontal force while pushing a 10.2kg box across the floor at a constant velocity, what is the coefficant of kinetic friction between the floor and the box?
The temperature of the glass surface of a 70 W lightbulb is 66 degrees C when the room temperature is 20 Deg. C. Estimate the temperature of a 150 W lightbulb with a glass bulb of the same size. Con
Suppose we have an infinitely long wire carrying a current of 2.0 A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find the magnitude of the magnetic field
The initial speed of school bus is 10.0 m/s. If the bus slows down to 2.0 m/s in 1 seconds what is the acceleration (positive or negative) of the bus?
Calculate values for the following. A) wavelength in nanometers. B) Frequency in Hz. C)Energy of emitted photon in eV.
Vector V1 is 8.50 units long and points along the negative x axis. Vector V2 is 6.50 units long and points at +56.0° to the +x axis. Vector V3 is 3.70 units long and points at +35.0° counter
Discuss all the symptoms the victim would show. Would the victim die, or would the scientist have to go back to the laboratory to invent a more effective death-ray?
A uniform liner charge density of 4.0 nC/m is distributed along the entire x axis. Consider spherical (radius = 5.0 cm) surface centered on origin. Determine the electric flux through this surface.
A ladder 6.05 m long leans against the side of a building. If the ladder is inclined at an angle of 68.0° to the horizontal, what is the horizontal distance from the bottom of the ladder to the
A raft is made of 13 logs lashed together. Each is 37 cm in diameter and has a length of 5.6 m. How many people can the raft hold before they start getting their feet wet, assuming the average perso
A cable, a distance L=5.7 m up a frictionless ramp, to height of 2.5 m, where it stops. Determine the work done on the crate by its weight during the lift.
A 3.5 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 17.4 N. Find the speed of the block after it has moved 5 m.
A 1.0 kg block is attached to a spring with spring constant 15.0 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50.0 cm/s. W
A tank having a volume of 0.100 m3 contains helium gas at 165 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.35 atm?
What are the following values about the central axis at the instant the torque has been applied for 195 ms? (a) the angular momentum of the disk.
A 75.0 kg person consumes a small order of French fries (250.0 cal) and wishing to "work off" by climbing a 10.0 m stairway. How many vertical climbs are needed to use all the energy?
Three equal 1.30-mu C point charges are placed at the corners of an equilateral triangle whose sides are 0.700 m long. What is the potential energy of the system? (Take as zero the potential energy
A friend has journeyed to the mountain foothills to escape the effects of radioactivity altogether. while bathing in the warmth of a natural hot spring she wonders aloud how the spring gets heat. wh
A 41.0-kg child swings in a swing supported by two chains, each 3.10 m long. The tension in each chain at the lowest point is 352 N. Find the child's speed at the lowest point.
What is the tension of the rope if the box is at rest? the box moves at a steady vx=5.20m/s? the box vx=5.20 and ax=4.00m/s^2?
An 8.00 point mass and a 15.0 point mass are held in place 50.0 apart. A particle of mass is released from a point between the two masses 13.0 from the 8.00 mass along the line connecting the two f