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A resistor, an uncharged capacitor, a dc voltage source, and an open switch are all connected in series. The switch is closed at time t=0 s. Which of the following is a correct statement about the circuit?
A) Current flows through the circuit even after the capacitor is essentially fully charged.B) The potential difference across the resistor is always equal to the potential difference across the capacitor.C) The potential difference across the capacitor is always equal to the voltage of the battery.D) Once the capacitor is essentially fully charged, there is no current in the circuit
A laser beam travels from air (n=1.002) into glass (n=1.522)and then into gelatin. The incident ray makes a 58 angle with the normal as it enters the glass and a 36.4 angle with the normal in the gelatin. Determine the angle of the refracted ray in..
In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed should the athlete leave the ground in order to lift his center of mass 2.04m and cross the bar b..
A 0.2kg rock attachedd to a horizontal springg of spring constant k=200N/m is placed on a horizontal, frictionless surface. what is the amplitude of motion for the rock
In general, for a concave mirror with a focal length +f, how far should an object be placed from the mirror to form a real image which is neither enlarged nor reduced(enter your answer as a multiple of f)?
When a hot -air furnace is utilized to heat a house, why is it significant that there be a vent for air to return to the furnace? What happen if this vent is blocked by a bookcase?
A person starts from rest at the top of a large, frictionless, spherical surface, and slides into the water below, At what angle does the person leave the surface
On his honeymoon, James Joule attempted to explore the relationships between various forms of energy by measuring the rise of temperature of water which had fallen down a waterfall on Mount Blanc. Find what maximum temperature rise
A river flows due south with a speed of 2.30 . A man steers a motorboat across the river; his velocity relative to the water is 4.40. find How much time is required to cross the river
A neutron that is stationary. A neutrino that is speeding up from 1000m/s to 1200 m/s. An electron that is slowing down from 500 km/h to 400 km/h. A proton moving at a constant velocity of 60 mph due north. Anion moving in a circle while traveling at..
A projectile is fired from ground level at t = 0, at an angleθ with respect to the horizontal. It has an initial speedvo. In this problem we are assuming that the ground islevel. Find the time tH it takes the projectile to reachits maximum height H.
A pulsar is a rapidly rotating neutron star that emits a radio beam the way a lighthouse emits a light beam. We receive a radio pulse for each rotation of the star. The period T of rotation is found by measuring the time between pulses. The pulsar..
A force applied to an object of mass m1 produces an acceleration of 3.90 m/s2. The same force applied to a second object of mass m2 produces an acceleration of 2.00 m/s2. (a) What is the value of the ratio m1/m2? (b) If m1 and m2 are combined into on..
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