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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
An engine does 17200 J of work and rejects 6470 J of heat into a cold reservoir whose temperature is 272 K
High-speed stroboscopic photographs show that the head of a 250-g golf club is traveling at 52 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just afte
Yusef pushes a chair of mass m = 55.0kg across a carpeted floor with a force F? p of magnitude Fp = 148N directed at ? = 35.0degrees below the horizontal, What is the magnitude of the acceleration a
A golfer swings his golf club, which is initially at rest, with an average acceleration of 8 rad/s2. What is the angular velocity of the club
Suppose the ring rotates once every 4.40s . If a rider's mass is 56.0kg , with how much force does the ring push on her at the top of the ride
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the apparent weight of a 2000 kg satellite in a geosy
A 250 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 3.5 N/cm, What is the speed of the block just before it hits the spring
A 2.70-kg object is moving in a plane, with its x and y coordinates given by x=7t^2-3 and y=2t^2+3, Find the magnitude of the net force acting on this object at t=1.60s
During the pitching motion, a baseball pitcher exerted an average horizontal force of 60 N against the 0.15 kg baseball while moving it through a horizontal displacement of 2.0 m before he released