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Acceleration is sometimes expressed in multiples of g, where g = 9.8 m/s2 is the acceleration due to the earth's gravity. In a car crash, the car's velocity may go from 26 m/s to 0 m/s in 0.15 s. How
31 kg crate rests on a horizontal floor, and a 52 kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.
In an avalanche, a mass of snow and ice high on a mountain breaks loose and starts an essentially frictionless "ride" down the mountain on a cushion of compressed air.
Suppose our Sun eventually collapses into a white dwarf, in the process losing about half its mass and winding up with a radius 5.0 percent of its existing radius. What would its new rotation rate b
Four 20-Ohm resistors are connected in series and the combination is connected to a 20-Vemf device. What is the current in any one of the resistors?
Sand is gradually added to the bucket until the system just begins to move. (a) calculate the mass of sand added to the bucket. (b) calculate the acceleration of the system.
An object is dropped from a bridge. A second object is thrown downwards 1.00 s later. They both reach the water 20.0 m below at the same instant. What was the initial speed of the second object?
Find an expression for the work done by the force on a as a function of x. Find both the kinetic energy and speed of a as x approaches infinity.
Edmond Zacchini flew 53 meters as a human cannonball. if his initail position was 5 meters above the ground and his initail velocity as 24.2 m/s at an angle of 31 degrees with respect to the horizon
An electron is released from rest at the point midway between the two charges, and it moves along the line connecting the two charges. 1) What is the speed of the electron when it is 10.0 cm from ch
Consider two frictionless inclined planes with the same vertical height. Plane 1 makes an angle of 30.0 with the horizontal, and plane 2 makes an angle of 70.0 with the horizontal.
You have 1.01 x 106 Na+ ions on one side. Considering this system as a parallel-plate suggests that the other side has equal and opposite corresponding charge. Calculate the charge and capacitance o
What would be the magnitude of the gravitational force exerted on the satellite by the planet if the radius of the orbit were increased to 3.3×10^7m ?
If each resistor is rated at (maximum without overheating), what is the maximum voltage that can be applied across the whole network?
Calculate the terminal voltage for a battery with an internal resistance of 0.700 and an emf of 8.00 when the battery is connected in series with an 77.0 resistor.
A 5.0 -long straight wire cuts through the center of the solenoid, along a diameter. This wire carries a 26 current downward (and is connected by other wires that don't concern us). What is the forc
Predict the photon frequency of the strongest infrared band of 2H35Cl. Use computer software to draw the wave functions of the first four eigenstates (using the harmonic oscillator approximation).
At what distance from Titan should the gravitational pull of Titan just balance the gravitational pull of Saturn?
Suppose the force between two charged objects separated by a distance r is + 12 N. If their distance apart were doubled, what would be the new force and how do you determine if it is attractive or r
The total charge on the conducting spherical shell is -Q. (Assume the potential is zero very far from all charges. Use a, b, c, k, and Q as necessary.) (a) What is the electric potential of the sphe
A flat surface of area 3.30 m2 is rotated in a uniform electric field of magnitude E = 7.05 x 105 N/C. Determine the electric flux through this area when the electric field is perpendicular to the s
If you weigh 670 on the earth, what would you weigh on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0 ?
A sphere of mass 2.5 multiplied by 10-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 33° with the vertical. (a) Find the m
A capacitor is connected in series with a 275 ohm resistor. When a switch is closed on a 1.50 V battery connected in series with these components, the capacitor's potential difference increases to 0