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A 1.50 kg object is held 1.25 m above a relaxed, massless vertical spring with a force constant of 300 N/m. The object is dropped onto the spring. 1.) How far does the object compress the spring?
A fixed charge Q= +3.79 µC is held fixed at the origin. A second charge q= +3.79 µC is released from rest at the position (1.15 m, 0.350 m) a) If the mass of q is 1.10 g, what is its spe
At the instant the string makes an angle of 30° with the vertical, calculate the following: the gravitational potential energy (relative to its value is at the lowest point)
Then the car slows down at a constant rate. Suppose that the total distance moved by your car during these two phases is 56.7 m when its initial speed is 82.0 km/h, and 24.4 m when the initial speed
A 3.00 µF and a 5.00 µF capacitor are connected in series across a 30.0 V battery. A 10.00 µF capacitor is then connected in parallel across the 3.00 µF capacitor. Determine
A 80 kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 4.1 m beneath the surface, determine the average resistance force exerted on him by the wat
A thin, circular disc is made of lead and has a radius of 0.0350 cm at 20.0 °C. Determine the change in the area of the circle if the temperature is increased to 625.0 °C. The coefficient of
A 2.00 -diameter current loop with 150 turns of wire is set up so that the field at the center is exactly equal to the earth's field in magnitude but opposite in direction. What is the current in th
A golfer standing on a fairway hits a shot to a green, which is elevated 6m above the point where she is standing. If the ball leaver her club with a velocity of 43 m/s at an angle of 40° with
An olympic jumper leaves the ground at an angle of 23° and travels through the air for a horizontal distance of 8.7m before landing. What is the take off speed of the jumper?
If a projectile has a launching speed of 18 m/s at an angle of 43° above the horizontal, What is the highest barrier the projectile can clear?
A bullet is fired from a rifle that is held 1.6m above the ground in a horizontal position. If the initial speed of the bullet is 1200 m/s, determine the time it takes for the bullet to hit the grou
What is the separation between the two cars when your attention finally returns?
Calculate the work done by the spring when it is stretched from its equilibrium position to 0.056m past its equilibrium. Answer in units of mJ.
What is the potential difference between the points at x = 0 and x = xmax?
What average force does the bullet exert on the target?(N)
A proton is fired from far away toward, the nucleus of a mercury atom. Mercury is element no. 80. If the initial velocity of the proton is 4x107m/s, what is the distance of closet approach to the nu
Protons in a linear accelerator are accelerated through a potential difference of 400,000 volts. What is the velocity of the protons after being accelerated?
A uniform magnetic field of magnitude 0.30 T is directed perpendicular to the plane of a rectangular loop having dimensions 8.2 cm by 15 cm. Find the magnetic flux through the loop.
A 0.10kg dart is fired horizontally at the center of a 0.80kg vertically hanging block, sticking to it. The system reaches a maximum height, h, of 0.20m above the collision point. Find: a) the velo
Water drips from the nozzle of a shower onto the floor 210 cm below. The drops fall at regular (equal) intervals of time, the first drop striking the floor at the instant the fourth drop begins to f
A 20 x 10-9 C charge is at the origin, and a -10 x 10-9 C is at x=15 cm. At what point or points on the x-axis is the electric potential zero?
The current in a 100 watt lightbulb is 0.900 A. The filament inside the bulb is 0.300 mm in diameter. What is the electron current in the filament?
A uniform magnetic field is turned on perpendicular to the plane of the coil. If the field changes linearly from 0 to 0.455Wb/m^2 in a time of 1.06s find the magnitude of the induced emf in the coil
A wire has resistance R. A second wire has twice the length, twice the diameter, and twice the resistivity of the first wire. What is its resistance?