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What is electric flux through a cube with side length 'A' enclosing a electric dipole, explain and also draw the field lines, what if dipole can move inside the cube.
In what seat nearest the middle seat of the row (on either side) will it be most difficult to hear a tone of 3430 Hz from the speaker? [The speed of sound in 20°C air is 343 m/s.]
A 20-rm kg loudspeaker is suspended 2.0 rm m below the ceiling by two ropes that are each 30^circ from vertical. What is the tension in the ropes?
A block of mass 2.50 kg is pushed 2.20 m along a frictionless horizontal table by a constant 16.0-N force directed 25 degrees below the horizontal. Determine the work done by (a) the applied force,
A plane flies from base camp to Lake A, 250 km away in the direction 20.0° north of east. After dropping off supplies it flies to Lake B, which is 260 km at 30.0° west of north from Lake A.
If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km?
A 0.255 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.200 kg puck that is initially moving along the x axis with a velocity of 2.06 m/s. After the collision, the
If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is transmitted to the tree, what is the increase in temperature of the b
A child on a boat throws a 5.40-kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child
A 116 kg chesterfield is pushed up a frictionless ramp at a constant speed by a delivery person. ff the ramp is inclined at 25.8° to the horizontal. What is the magnitude of the normal force th
Which converts solar energy to electrical energy with an efficiency of 26%. In one hour, how much electrical energy does the panel produce?
A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 60.0-gram mass is attached at the 18.0-cm mark, the fulcrum must be moved to the 39.2-cm mark for balance. Wha
At the Fermilab accelerator in Batavia, Illinois, protons having momentum 5.55 × 10-16 kg · m/s are held in a circular orbit of radius 1 km by an upward magnetic field.
A total of 6.0 W·h of energy. If the batteries last 70 hours before they need to be replaced, what was the average current through the calculator?
29 g of copper pellets are removed from a 300 C oven and immediately dropped into 100 mL of water at 22 C in an insulated cup. What will the new water temperature be?
A ball is thrown from the top of a building upward at an angle of 39 degrees to the horizontal and with an initial speed of 24 m/s. The ball is thrown at a height of 57 m above the ground and hits t
A 108 ball is tied to a string. It is pulled to an angle of 8.0 and released to swing as a pendulum. A student with a stopwatch finds that 16 oscillations take 19 . What is the length of the string
A car takes 13 s to go from v = 0 to v = 50 m/s at approximately constant acceleration. If you wish to find the distance traveled using the equation d = 1/2 at2, what value should you use for a?
At 20°C, the carbon resistor in an electric circuit connected to a 5.0 V battery has a resistance of 200. What is the current in the circuit when the temperature of the carbon rises to 80°C
A block (mass = 15.1 kg) is held in position on a frictionless incline by a cord (length = 0.604 m). The mass per unit length of the cord is 1.21e-2 kg/m, so the mass of the cord is negligible compa
Find the angles from the central axis at which the (a) first-, (b)second-, and (c) third-order bright fringes are located on the screen.
The cord is being vibrated at a frequency of 169 Hz (vibration source not shown in the drawing). What is the smallest angle θ between 15.0degree and 90.0degree at which a standing wave exists
Two people are pushing their stalled car up a hill with an incline of 2.00°. They are pushing parallel to the surface of the hill. The car's mass is 954 kg. What is the combined force they must
The near edge of the loop is 1.20 from the wire. The current in the wire is increasing at the rate of 130. What is the current in the loop?
In a test run, a certain car accelerates uniformly from zero to 23.6 m/s in 2.95 s. What is the magnitude of the car's acceleration?