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A 0.25kg block is placed on a light vertical spring (k=5 x 10^3N/m) and pushed downwards, compressing the spring and continues to travel upwards. What is the kinetic energy of the block at the highe
A uniform electric field of magnitude 230 V/m is directed in the positive x direction. A +11.0 µC charge moves from the origin to the point (x, y) = (20.0 cm, 50.0 cm).
A 2000 kg car pushes a 3000 kg truck that has a dead battery. The drive wheels of the car push against the ground with a force of 6000 N. What is the magnitude of the force (in N) that the truck exe
What common speed is necessary to obtain a 5 x 10-4 m difference in the radii of the Nickel and Copper atoms' paths for the given magnetic field, masses, and charges?
A wire has a length of 6.52 × 10-2 m and is used to make a circular coil of one turn. There is a current of 4.31 A in the wire. In the presence of a 3.50-T magnetic field, what is the maximum
A winch is used to drag a 295N crate up a ramp at a constant speed of 84.0 cm/s by means of a rope that pulls parallel to the surface of the ramp. The rope slopes upward at 26.0 degrees above the ho
When the wire is horizontal, it experiences no magnetic force. When the wire is tilted upward at an angle of 23°, it experiences a magnetic force of 5.6 × 10-3 N. Determine the magnitude o
A high-voltage copper transmission line with a diameter of 1.40 cm and a length of 300 km carries a steady current of 9.75 102 A. If copper has a free charge density of 8.46 x 1028 electrons/m3, ove
The wire carries a current of 6.30 A toward the south. The magnetic force on the wire per unit length of wire has magnitude 3.00 10-3 N/m. (b) What is the magnitude of B?
A parallel-plate air capacitor has a capacitance of 300 pF and a charge of magnitude 0.250uC on each plate. The plates are 0.700mm apart. A) What is the potential difference between plates?
A 1400- car rounds a corner of radius = 59 . The coefficient of static friction between the tires and the road is 0.80. At what speed will the force of static friction exerted on the car by the road
How much current is contained within the width of a thin ring concentric with the wire if the ring has a radial width of 10.0 µm and is at a radial distance of 1.20 mm?
A wire of Nichrome (a nickel-chromium-iron alloy commonly used in heating elements) is 1.5 m long and 1.8 mm2 in cross-sectional area. It carries a current of 4.7 A when a 2.0 V potential difference
How fast is Betty moving when the swing passes through its lowest position? Answer in units of m/s If Betty moves through the lowest point at 1.1 m/s, what is the magnitude of the work done on the s
If that same man used a tennis racket to deflect the asteroid directly back in its original direction with exact conservation of energy, what would be the velocity of the man after the collision?
Calculate the power (in horsepower) required to accelerate the car at 0.90 m/s2 when the speed is 84 km/h.
A swimmer moves through the water at an average speed of 0.29 m/s. The average drag force is 115 N. What average power is required of the swimmer?
You swing a 1.65-kg rock tied to a rope in a vertical circle of radius 0.75 m. When the rock reaches the top its speed in 3.25 m/s. A.) Calculate the acceleration of the rock at the top and show it'
A bread box is made to move along an x axis from x = 0.15 m to x = 1.20 m by a force with a magnitude given by F = e(-2x2), with x in meters and F in newtons. How much work is done on the bread box
If a quasar is 100 times more luminous than a bright galaxy (absolute magnitude about -21), what is the absolute magnitude of the quasar? If this quasar was located at the center of the our galaxy,
Two appliances are connected in parallel to a 120-V battery and draw currents I1 = 5.0 A and I2 = 3.9 A. If these appliances are instead connected in series to the same battery, what is the total cu
A vertical electric field of magnitude 2.00 x 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. A car with a rectangular size of 6.00 m by 3.00 m is traveling along a
A tennis bal is hit vertically upward with a speed of 21.0 m/sec from the roof of an office-building that is 275 ft above the ground. How long after being hit does the ball strike the ground ? (1 m
The Earth has an angular speed of 7.272 10-5 rad/s in its rotation. Find the new angular speed if an asteroid (m = 1.10 1022 kg) hits the Earth while traveling at a speed of 1.53 x 103 m/s (as