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A straight wire in a magnetic field experiences a force of 0.029 N when the current in the wire is 2.5 A. What is the new current
Zach, whose mass is 71kg , is in an elevator descending at 13m/s . The elevator takes 5.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking
If it starts 4.70m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 21.0N
A rock is thrown with initial velocity of 10 m/s and falls 50 m from the base of the cliff. how far away from the base of the cliff does the rock land
A roof tile falls from rest from the top of a building. How far abovethe top of this window is the roof
A 10 kg box is on a slippery ramp, What has greater magnitude, the force applied by you or the gravitational force
Three electrons are located at the vertices of an equilateral triangle, one at each vertex. What is the magnitude of the initial acceleration of each electron
What is the magnitude of the apparent weight of a 68kg astronaut 2600km from the center of the Earth's Moon in a space vehicle accelerating toward the Moon at 2.1m/s2
A planet orbits the sun with a period of 8 years. How far is the planet from the sun
A car at the Indianapolis 500 accelerates uniformly from the pit area, going from rest to 350km/h in a semicircular arc with a radius of 210m. Determine the tangential and radial acceleration of the
Two electrons are located at two of the vertices of an equilateral triangle, one at each vertex. What is the net electric field at the third vertex
An object of length 3.00 cm is inside a plastic block with index of refraction 1.40. find where is the object relative to its image
The mass of Mercury is 0.0550 times that of earth, and its radius is 0.380 times that of earth. Calculate the average density of Mercury
A 12.0 kg box on a horizontal surface is pushed with an initial speed of 1.6 m/s. It has a friction force of 20N how many seconds will it take for the box to come to a stop
In a head-on collision, a car stops in 0.15s from a speed of 19m/s. What force is applied to the driver by his seat belt during that fraction of a second
Two skaters, of mass mA = 60kg and mB = 90 kg, are skating toward each other at the same speed v = 4 m/s. What is the speed of skater A following the collision
A component with a 20 Ohm resistor is rated for use at power levels not exceeding 2,282 mW. How much current can safely flow through the component
A block with mass mA = 11.0kg on a smooth horizontal surface is connected by a thin cord that passes over a pulley to a second block with mass mB = 6.0kg which hangs vertically
Given two vectors A? = 4.00 i^+ 7.80 j^ and B? = 5.60 i^? 2.00 j^ , find the scalar product of the two vectors A? and B?. Find the angle between these two vectors
A particle (charge 4.0 ?C) is released from rest at a point on the x- axis, x = 5.0 cm. What is the kinetic energy of the particle at the instant
Two long, straight wires are separated by 0.12 m. The wires carry currents of 1.0 A in opposite directions, as the drawing indicates. Find the magnitude of the net magnetic field at the point A
Astronomical observations of our Milky Way galaxy indicate that it has a mass of about 8 multiplied by 1011 solar masses. What should the orbital period of that star be
If this amount were shaped into a cube, what would be the length of one edge of that cube (in meters)
Consider two masses (M=50 kg, m = 10 kg) connected by a string as shown below. Find the tension in the connecting string
You are told that there are 17 charges with the same charge Q > 0 C and 19 charges with the same charge - Q in a closed container of arbitrary shape. Calculate the net electric flux through the c