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An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is = 3.82 x 109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field
The average intensity of sunlight at the top of the earth's atmosphere in 1390 W/m2. What is the maximum energy that a 34-m x 49-m solar panel could collect in 1.5 hours in this sunlight?
What fraction of the power radiated by the sun is intercepted by the planet Mercury? The radius of Mercury is 2.44 x 106 m, and its distance from the sun at the moment is 5.83 x 1010 m. Assume that th
A space probe on the surface of Mars sends a radio signal back to the Earth, a distance of 7.79 x 107 km. Radio waves travel at the speed of light (3.00 x 108 m/s). How many seconds does it take for t
The frequency of these radio waves is the same as the frequency at which the object oscillates. What is the spring constant of the spring?
A(n) 6 g bullet is fired into a 394 g block that is initially at rest at the edge of a frictionless table of height 1 m. The bullet remains in the block, and after impact the block lands 1.8 m from
Find the distance the larger bead moves along the wire in the first 4.9 s following the collision. Answer in units of cm.
A 0.26 kg rock is thrown vertically upward from the top of a cliff that is 36 m high. When it hits the ground at the base of the cliff the rock has a speed of 32 m/s. Find the greatest height of the
A boy leaves home and sets out at a constant of 2.0m/s[E]. Fifteen minutes later, his mother notices that his lunch is on the kitchen table counter. Starting from rest, she sets out at 0.1m/s2 [E].
Using your results from part a, find the speed of the crate after sliding this distance.
At a local playground, a child on a swing has a speed of 2.2 m/s when the swing is at its lowest point. a.) To what maximum vertical height (above the bottom of the swing) does the child rise, assumin
The image of the united states postage stamps is 1.5 times the size of the actual stamps in front of a lens. determine the focal length of the lens if the distance from the lens oto the stamps is 2.
A 8.9 cm diameter loop of wire is initially oriented perpendicular to a 1.3 T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.26 s.
Find the magnetic flux through an individual turn of the coil if the magnetic field makes an angle of 45 with the normal to the plane of the coil. Answer in units of mWb.
What current is required in the windings of a long solenoid that has 918 turns uniformly distributed over a length of 0.607 m in order to produce inside the solenoid a magnetic field of magnitude 6.
A high-voltage transmission line with a resistance of 0.32 /km carries a current of 1020 A. The line is at a potential of 690 kV at the power station and carries the current to a city located 157 k
A ball is projected straight up from the ground with initial speed v0=200m/s and when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. What is the total work done
Two uniformly charged insulating rods are bent in a semicircular shape with radius r = 27 cm. If they are positioned so they form a circle but do not touch and have opposite charges of +3.1 µC
A hollow sphere of radius 0.35 m, with rotational inertia I = 0.036 kg m2 about a line through its center of mass, rolls without slipping up a surface inclined at 37° to the horizontal. At a cert
Three capacitors, C1 = 5.00 µF, C2 = 6.00 µF, and C3 = 8.00 µF, are connected together. Find the effective capacitance of the group for the following situations.
A man hanging upside down is holding a partner who weighs 475 N. Assume that the patner moves on a circle that has a radius of 6.50 m. At a swinging speed of 4.00m/s, what force must the man apply t
A cliff diver, mass 165 Ibm, dives from a 135 ft cliff into the sea. Neglecting air friction: (a) What is the diver's total energy in joules at the following heights: 100 ft, 50 ft, surface of the wat
An electron accelerated from rest through a voltage of 550V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 17cm, what is the magnitude of the ma
The driver applies the brakes and the truck is brought to a halt in a distance of 38 m. if the deceleration of the truck is constant, what is the minimum coefficient of friction between the crate an
A Chevrolet Silverado with a mass of 5,520 Ibm is being driven on a mountain road 6,250 ft above sea level (gL = 31.0 ft/s2) at 65 mph. Determine the total energy possessed by the vehicle using sea