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A proton is released from rest in a uniform electric field of magnitude 412 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude
A charge of 100 µC is at the center of a cube of edge 40.0 cm. No other charges are nearby. (a) Find the flux through the whole surface of the cube.
The eye of a hurricane passes over Grand Bahama Island in a direction 60.0° north of west with a speed of 38.0 km/h. Three hours later, the course of the hurricane suddenly shifts due north, and
What is the deBroglie wavelength of a neutron whose kinetic energy is 0.04 eV? Help: We give masses in terms of their mc2 energy equivalent, because that simplifies the numerical calculation when ener
The charged capacitors are disconnected from the line and from each other and then reconnected to each other, with terminals of like sign together. Find the final charge on 3*10^6F- capacitor. Find
Using Gauss's law and assuming the pipe is sufficiently long to consider it infinitely long calculate the electric field r=7.14cm from the centreline of the pipe. Could someone please help me and al
A light wave has a 670 nm wavelength in air. Its wavelength in a transparent solid is 416 nm. (a) What is the speed of light in this solid? m/s (b) What is the light's frequency in the solid?
How long does it take the Sun to melt a block of ice at 0 with a flat horizontal area 1.0 and thickness 2.0 ? Assume that the Sun's rays make an angle of 38 with the vertical and that the emissivity
If the surface temperature of the skin is taken to be, how much thermal power does the body described in the introduction radiate? Take the emissivity to be. Express the power radiated into the room
(a) What is the magnitude of the electric field at the third vertex of the triangle if both of the charges are positive? N/C. (b) What is it when one of the charges is positive and the other is nega
A cube of ice is taken from the freezer at -8.5 and placed in a 92 aluminum calorimeter filled with 314of water at room temperature of 20.0 . The final situation is observed to be all water at 15.0.
An electron experiences the greatest force as it travels 1.7 106 m/s in a magnetic field when it is moving southward. The force is upward and of magnitude 2.5 10-12 N. What are the magnitude and dir
The index of refraction for violet light in plastic is greater than that for red light by 0.0400. Delaying any rounding off of calculations until the very end, find the index of refraction for violet
If the power developed by the engine is 151 hp, estimate the total friction force acting on the car when it is moving at a speed of 35 m/s. One horsepower equals 746 W.
A toy cannon uses a spring to project a 5.39-g soft rubber ball. The spring is originally compressed by 4.93 cm and has a force constant of 7.96 N/m. When the cannon is fired, the ball moves 15.9 cm
A hot-air balloon is rising upward with a constant speed of 2.41 m/s. When the balloon is 8.13 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much
A motorcycle has a constant acceleration of 2.74 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its s
The track for a racing event was designed so that riders jump off the slope at 30 angle, from a height of 5 ft. The speed at the tip of the ramp is 60 mph. (A) How long will the rider remain in mid-
A block of mass 0.244 kg is placed on top of a light, vertical spring of force constant 4 925 N/m and pushed downward so that the spring is compressed by 0.108 m.
The electric field of an unspecified source charge is given by E=4.0x10^6 N/C, + i at a certain point in space. If an electron is placed at that point, what is the electric force that will act on t
Light from a laser beam with a wavelength of 530 nm passes through a narrow single slit and observed on a screen 1.0 m behind the slit. The first minimum of the diffraction pattern is 0.84 m from th
The potential difference between the "plates" is 82.3 mV. How much energy is stored in this capacitor?
(a) Determine the distance of the final image relative to the converging lens. (b) What is the height of the final image (including the proper algebraic sign)?