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A heater element produces 150 watts of heat if it is joined to an electrical line supply of 110 V. When a second similar heater element is joined in series with the first and the combination to the
A generator is joined to a resistor and a 0.022-H inductor in series. The rms voltage across the generator is around 6.3 V. If the generator frequency is set to 200 Hz, then the rms voltage across t
The work functions for sodium, cesium, copper and iron are respectively: 2.3, 2.1, 4.7 and 4.5 eV. Which of these metals will not release electrons if visible light shines on it
Determine the magnitude of the total gravitational force on one of the masses, due to the other three?
A man on the top of a building throws a ball at 18m/s at a 35 degree angle off a 165m building. Determine how fast the ball is moving if it strikes the ground.
(i) Write down an expression for U as a function of x, having U in joules and x in meters. (ii) Determine the maximum positive potential energy?
When the difference in pressure is measured to be P1 - P2 = 1.20 kPa and the radius of the inlet tube to the meter is 1.40 cm. (i) Determine the speed of the gasoline as it departs the hose.
The two converging lenses, each having a focal length of 14.9 cm, are positioned 39.4 cm apart and an object is positioned 30.0 cm in front of the first lens. Where is the final image made? Determi
In a Young's double slit experiment, the seventh dark fringe is positioned 0.026 m to the side of the central bright fringe on a flat screen, that is, 1.0 m away from the slits. The separation among
A physicist is designing a cyclotron to accelerate the protons to 0.100 c. The magnet employed will generate a field of 1.40 T. Compute (i) the radius of the cyclotron and (ii) the corresponding osc
At this energy, compute (i) the speed, stated as a fraction of the speed of light; and (ii) the magnetic field at the proton orbit that consists of a radius of curvature of 750 m. (The proton consis
i) Find out the temperature (in °C) of the copper-steel interface. ii) Determine how much heat is conducted via 1.00 m2 of the combined sheets per second?
A river flows in the direction of the south at 0.9 m/s. A girl, who can swim at 1.6 m/s in still water, is crossing the river from the west bank. In what direction should she swim if she wishes to t
Determine the magnitude of the velocity of the ball one second later? Please sketch a diagram having initial and t = 1sec velocity vectors clearly labeled.
The mass and radius of the moon are 7.4 × 10^22 kg and 1.7 ×10^6 m, correspondingly. Find out the weight of a 1.0 kg object on the surface of moon?
Find out the minimum angle at which a roadbed must be banked so that a car traveling at 20.0 m/s can securely negotiate the curve when the radius of the curve is around 2.00 × 10^2 m.
Determine what would be the speed of the ball which was initially idle after the collision? (Obtain the positive direction as to the right.)
Assume that the target is at rest if struck; determine what would the speed be after the arrow exits?
The beam reflects from a speeding car, which is moving in the direction of the police car at 48.0m/s with respect to the police car. The speeder's radar detector detects the microwave at a frequency
The electric field in a radio wave traveling via vacuum consists of amplitude 2.5x10^-4 V/m and frequency 1.47 MHz. i) Determine the amplitude and frequency of the magnetic field.
Suppose that you are standing on a lake that is really frozen; you then carry on to provide a small child (having specific mass of m2) a push away from you (encompassing specific mass of m1). Suppos
The electron in a hydrogen atom having energy of-.544 eV is in a sub-shell having 18 states. i) Determine the principal quantum number, n for the atom?
Let consider the point A which is 30 cm from the end of the string and point B that is 60 cm from the end of the string. Amplitude of both points is 1cm. Determine: i) Wave speed ii) Frequency
A spacecraft moving away from the Earth emits a 4377 Hz signal. A scientist on Earth evaluates the signal to be 4373 Hz. Determine the speed of the spacecraft relative to the Earth?