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The period of motion of an object-spring system is T = 0.486 s when an object of mass m = 206 g is attached to the spring. Find the frequency of motion in hertz.
A dockworker applies a constant horizontal force of 79.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 13m in
Calculate the orbital radii of the hydrogen atom for the 3rd principal quantum number. Use radius, r=n^2*.53A
The second point charge is released from rest. What is its speed withn its distance from the origin is (i) .500 m (ii) 5.00 m (iii) 50.0 m.
Venus has a radius of approximately 6,100 km and a mass of 4.9 x 10^24 kg. What is the escape velocity of Venus?
A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030
After the brakes are applied, the car deaccelerates at 4.2 m/s2 . Will the car hit the barricade and, if so, what is its speed?
A sled weighs 100 N. It is held in place on a frictionless 20° slope by a rope attached to a strong stick fixed at the top, the rope is parallel to the slope. Find the tension, T, in the rope.
A transverse sinusoidal wave on a string has a period of 10.4 ms and travels in the negative x direction with a speed of 45.9 m/s. At t = 0, a particle on the string at x = 0 has a displacement of
For all intensive purposes, it acts as many small resistors hooked up in series. In the following diagram, what is the potential difference measured by a voltmeter between the points P and Q?
A 10 cm tall perfume bottle is placed 100 cm in front of a convex spherical mirror with a radius of curvature of 50 cm. Determine the image properties by calculators.
In a head-on collision, a car stops in 0.27 from a speed of 12 . The driver has a mass of 76 , and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat b
Explain why in any uniformly expanding Universe, every observer would think that they are at the center of the expansion.
What minimum thickness should the magnesium fluoride film have if the reflection of 607 nm light is to be suppressed? Assume that the light is incident at right angles to the film.
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 150 rad s^2?
What is the magnitude and direction of the magnetic field at a point that is h = 4.00 cm above the point where the wires cross.
A layer of benzene (n=1.50) 2.60cm deep floats on water (n=1.33) that is 6.50cm deep. what is the apparent distance from the upper benzene surface to the bottom of the water layer when it is viewed
A final image from both lenses is inverted and located halfway between the two lenses. How far to the left of the 10.5 focal-length lens is the original object?
Assume that the mean free path for 100 eV neutrons in water is 2 cm. What fraction of a beam of 100 eV neutrons would be removed through 10 cm water?
The loaded cab of an elevator has a mass of 3.0 103 kg and moves 221 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab?
What is the minimum coating thickness needed to ensure that light of wavelength 560 nm and of perpendicular incidence will be reflected from the two surfaces of the coating with fully constructive i
Determine the work done by the gas on the bullet as the bullet travels the length of the barrel. If the barrel is 1.00 m long, how much work is done, and how does this value compare to the work calcul
Twenty cubic centimetres of monatomic gas at 20 degree celcius and 100kPa is suddendly compressed to 0.50cm^3 adiabatically. Assume that we are dealing with an ideal gas. What are its new pressure
An electric motor rotating a workshop grinding wheel at a rate of 9.00x10^1 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.60 rad/s2. (a)How l
Determine the Coulomb barrier for alpha particles incident on the stable isotope of Li