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A sphere of radius 20.0 cm and mass 1.80 kg starts from rest and rolls without slipping down a 30.0º incline that is 10.0 m long. (a) Calculate its linear and rotational speeds when it reaches t
Consider two identical 70-micro-coulomb point charges, each of 65 mg mass. Let them initially be at rest, 40 cm apart. Suppose they are simultaneously released, and accelerate away from each other w
The corner opposite to (and most distant from) point P has charge Q = 47 nanocoulomb. The two corners nearer to P have charges +5Q and -4Q, respectively. Assuming that the potential V = 0 at a great
The total electric flux coming out of a cubical box, that is 28.0 cm on a side, is 128 GNm^2/C (giga newtons times meters squared per coulomb). How many coulombs of charge are enclosed by the box?
A skier of mass 105 kg travels down a ski trail of height 240m. If the skier has a speed of 40 m/s at the bottom of the hill, what is the work done by friction on the skier? (Assume the skier starts
A two stage rocket of mass 751kg traveling at speed 709m/s separates into a first stage of mass 236kg moving at zero speed and a final stage moving at a new speed - find this new speed right after s
Atmospheric pressure is around 1.010×105 Pa. Think about the air pushing on a flat, circular glass window which has a radius of 0.0830m. What is the force with which the air is pushing on one
The ballistic pendulum consists of a stationary 2.50 kg block of wood suspended by a wire of negligible mass. A 0.0100 kg bullet is fired into the block and the block swings a maximum height of 0.65
What magnetic field would be needed to produce a path with the same diameter if the particles were electrons having the same speed as the protons?
A laser beam is sent from the submarine so that the beam strikes 2.10 x 10^2 m from the building standing on the shore and the laser beam hits the target on the top of the building. Use n=1.333 for
A 3.00 m long rod is hinged at one end the rod is initially held in the horizontal position and then released as the free end is allowed to fall what is the angular acceleration as it is released (t
Bernoulli's equation only yields perfect predictions if the following conditions exist: i- The liquid is inviscid; that is, it has no viscosity, and offers no frictional resistance to movement throu
Is it the distance covered by its route of flight (12,450 miles) or the distance measured straight through the center of the earth (7,920 miles)? Suppose the trip took exactly one day. What would be
A parallel-plate capacitor consists of two parallel, square plates that have dimensions 1.0 cm by 1.0 cm. If the plates are separated by 1.0 mm, and the space between them is filled with teflon, wha
A racetrack has the shape of an inverted cone. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle 21°. For a speed of30m/s, at what value of
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 4.83 x 105 N.
An electron was accelerated from rest through a potential difference of 9900 V. What is its speed? The mass of an electron is 9.11 x 10-31 kg, and its charge is 1.602 x 10-19 C. Please show work.
A 2 kg rock, tied to a 3 meter long rope, is spun around in a horizontal circle at 4 m/s. How much work is done on the rock by the rope as it goes around the circle one time at constant speed? (ans
An oscillating LC circuit has a current amplitude of 9.80 mA, a potential amplitude of 276 mV, and a capacitance of 232 nF. What are: (a) the period of oscillation (b) the maximum energy stored in t
If you want to design a centrifuge of diameter1.6m to have a force of127,000 times the force of the Earth's gravity, what is the speed of the outer edge of the centrifuge? Such a device is called a
The wire is in a uniform, horizontal magnetic field of magnitude .4T perpendicular to the wire. A switch connecting the wire to a battery is closed and the wire is shot upward, rising to a max heigh
Find the magnitude of the magnetic field midway between two long straight wires 8.80 cm apart when their currents are I1= 11.50 A and I2= 19.00 A that each one carries. What is the magnitude of the
A force P is applied to the bar as shown. This causes point A to have acceleration 3.6 m/s2 to the right and the bar to have an angular acceleration 6 rad/s2 counter clockwise. Determine the acceler
Determine the electric potential at the position of one of the particles, due to the other two particles in the triangle?
The results of a ballistic pendulum measurement are as follows: Calculate the initial velocity of the ball, v.