Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
This means, coincidentally, that Io is about as far from Jupiter's surface as our moon is from the Earth's surface (i.e., quite close). Io's radius is 1821 km and its mass is 8.93 x 1022 kg. Calcula
The edge of a cube consist of equal resistors of resistance R, which are joined at the orners, let a battery be connected to two opposite corners of a face of cube. what is the efective resistance?
You throw a 29.7 rock vertically into the air from ground level. You observe that when it is a height 16.4 above the ground, it is traveling at a speed of 21.2 upward. What is the total mechanical e
A superconductor wire has a critical temperature of 90K. If the wire is at 77K, and an electromotive force of 6.0V is attached to the wire, how much energy is lost to heat per second if a current of
A charged conducting sphere of radius 18cm has 10 to the 12th power electrons removed from its surface. What is the surface charge density of the sphere?
An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are sep
An electronic flash attachment for a camera produces a flash by using the energy stored in a 770 µF capacitor. Between flashes, the capacitor recharges through a resistor whose resistance is c
In a heart pacemaker, a pulse is delivered to the heart 76 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 1.8 x 106. One pulse is delivered every
A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 9.0 m/s at the end of 9.0 s. At that instant, the kinetic energy of the system is 80 J and ea
A battery has an internal resistance of 0.9. a number of identical light bulbs, each with a resistance of 41.4, are connected in parallel across the battery terminals. the terminal voltage of the ba
Two identical blocks made of extremely hard metal collide with equal and opposite velocities. Is such a collision closer to being completely inelastic? Where does any lost kinetic energy go? Assumin
A 1.80 kg block slides on a rough, horizontal surface. The block hits a spring with a speed of 1.85 m/s and compresses it a distance of 13.0 cm before coming to rest. If the coefficient of kinetic f
A 24 kg block slides with an initial speed of 14 m/s up a ramp inclined at an angle of 25o with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.6. Use energy
Catching a wave, a 71 kg surfer starts with a speed of 1.3 m/s, drops through a height of 1.95 m, and ends with a speed of 8.2 m/s. How much nonconservative work was done on the surfer?
An electron with velocity v= 1.0 x 106 m/s is sent between the plates of a capacitor where the electric field is E = X V/m. If the distance the electron travels through the field is 1.0 cm, and it d
A series RC circuit has a time constant of 1.0 s. The battery has a voltage of 50 V and the maximum current just after closing the switch is 500 mA. The capacitor is initially uncharged. Calculate t
Two cylindrical resistors are made of the same material. The resistors, with resistance R1 and R2, have different radii, r1 and r2, and different lengths, L1 and L2. What is the relative values (r1/
What is the acceleration (a) of the logs rolling down the hill? What is the magnitude of the frictional force of the rolling logs?
Find the emf induced in the toroid when the current decreases to 0.9 A from 2.6 A in a time of 0.13 s.
Two long wire are connected parallel to each other at closest they ae 20.0 cm apart.what is the magnitude of the magnetic field at a point midway between them if the top one carries a current of 20.
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10^-21 newtons and the distance between two small spheres of equal charge i
A space explorer is moving through space far from any planet or star. He notices a large rock, taken as a specimen from an alien planet, floating around the cabin of the ship. Should he push it gent
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 586 N. As the elevator later stops, the scale reading is 400 N. Assume the magnitude of the ac
Calculate how much a 8.8 m slab of steel will expand if heated from 59 °C to 183 °C. The coefficient of thermal expansion for steel is 11×10 ^-6 1/(deg text(C)). Express your answer in
Find the maximum energy stored in the spring bumpers and the velocity of each block at that time.