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A 0.30 kg ball is tied to a 38 cm long string and released from a horizontal position. It swings down, colliding with a wad of putty of mass 0.50 kg. After the collision, the block and putty stick
a. Find the electric field 8.4 cm from the filament, where the distance is measured perpendicular to the length of the filament. The Coulomb constant is 8.98755 × 109 N · m2/C2 b. Find
Find the magnitude of the magnetic force acting on the ball just before it hits the ground. (Hint: Ignore magnetic forces in finding the ball's final velocity.) Please Show work.
Calculate the torque on the wire when the plane of the coil makes an angle of 46.1 degrees with the direction of the field.
When 170 V is applied across a wire that is 7.7 m long and has a 0.25 mm radius, the magnitude of the current density is 1.4 x 104 A/m2. Find the resistivity of the wire.
A cosmic ray proton is moving at such a speed that it can travel from the moon to earth in 1.70 s. (Assume Earth-moon separation is 3.8 108 m and the speed of light is 3. 108 m/s.) (a) At what fra
The conducting path between the right hand and the left hand can be modeled as a 12 cm-diameter, 180cm-long cylinder. The average resistivity of the interior of the human body is 4.7(Omega*m) .
A 2.2mm -diameter glass bead is positively charged. The potential difference between a point 2.3mm from the bead and a point 4.0mm from the bead is 500V . What is the charge on the bead in Coulombs?
Calculate the magnitude of the charge on the plates if the separation is 0.81mm .
find the normal force on the car to the highway surface. As the car and truck round the curve at 66.3 , find the normal force on the truck to the highway surface. shouldn't the normal force be W*cos
(a) If the 7.90-µg sphere is released from rest, find its kinetic energy when it is 0.500 µm from the fixed charge. (b) If the 7.90-µg sphere is released from rest, find its speed
How far away from its location when the string breaks will the rock hit the ground? Your answer should be given in meters, to the nearest centimeter.
If the distance between the vehicles is initially only 30.0 m, at what speed would the collision occur?
Assume this current to flow in the same direction in two neurons, which are parallel over 1.0 cm and separated by 0.70mm . What is the force between the two neurons? Is it an attractive or repulsiv
The potential energy at x = 8 m is -2000 V and at x = 2 m is +400 V. What is the magnitude and direction of the electric field?
If you pressurize the gas at a constant temperature, how much work must be done on the gas? Give you answer in Joules to four significant digits.
What is the change in temperature of the gas due to the removal of the energy? Give your answer in Kelvin to three significant digits. Do not include the units in your answer.
A flywheel having constant angular acceleration requires 5.00s to rotate through 165rad . Its angular velocity at the end of this time is 110 . Find the angular velocity at the beginning of the 5.00
A spacecraft is in orbit around a planet. The radius of the orbit is 3.1 times the radius of the planet (which is R = 71455 km). The gravitational field at the surface of the planet is 22 N/kg. Wha
A single resistor is connected across the terminals of a battery. Which one or more of the following changes in voltage and current leaves unchanged the electric power dissipated in the resistor?
A 15.0-m length of wire consists of 9.0m of copper followed by 6.0m of aluminum, both of diameter 1.5mm . A voltage difference of 85mV is placed across the composite wire. A.) What is the total resi
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. What is the speed of the electron when it is 10.0cm from charge
After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 60.4 m horizontally from the end of the ramp. His velocity, just before landing, is 25.2 m/s and points
A soccer player kicks the ball toward a goal that is 11.0 m in front of him. The ball leaves his foot at a speed of 17.4 m/s and an angle of 39.0 ° above the ground. Find the speed of the ball w
It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of the ball just before it lands? Please show your work.