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An electric car has a battery voltage of 200 V. After 130 km of driving, the battery needs 2 x 108 J of electrical energy restored to fully recharge the battery. How many Coulombs have to be put into the positive terminal of the car battery(which remains at 200 V during the recharging process) by the battery charger? (units of Coulombs)
a 0.5kg block at rest on a table is attached to a horizontal spring with a spring constant k200 nm. the spring is
Fairgoers ride a Farris wheel with a radius of 5.00 meter. The wheel completes one revolution every 32.0 second. Obtain the average speed of a rider on this Ferris wheel
A 1000 Hz sound travels through pure oxygen. The wavelength of the sound is measured to be 0.65m. What is the speed of sound in oxygen?
two identical charged objectsare hanging from 26.8 cm threads from the same point on the cieling. what is the charge on each object
A 2.3 kg pendulum bob is pulled out such that its center of mass is 0.26 m above its lowest point and released. What is the gravitational potential energy of the pendulum
the resistance of a very fine tungsten wire with a 10 micro m x 10micro m square cross section is 2978 ohm how long is
Is momentum conserved in all of the experiments? Please give a complete description with examples as needed supporting your response.
What should be the mass of object B? The numbers in the figure indicate the relative lengths of the rods on each side of their supporting cords.
A 7.0-kg object is attached to one end of a horizontal spring that has a negligible mass and a spring constant of 300 N/m. The other end of the spring is fixed to a wall. The spring is compressed by 10 cm from its equilibrium position and released fr..
An ambulance moving at 42 m/s sounds its siren whose frequency is 450 Hz. a car is moving in the same direction as the ambulance at 25 m/s. what frequency does a person in the car hear as the car approaches the ambulance? After the ambulance passe..
imagine that the only visible photons that an electron in a box of unknown length emits have wavelengths of 689nm and
A 3.50 gram bullet is fired horizontally at two blocks resting on a smooth surface. Evaluate what is the initial speed of the bullet
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