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A spherical Christmas tree ornament is7.18 cm in diameter. What is the magnification of the image ofan object placed 8.6 cm away from the ornament?
A simple harmonic oscillator consists of a block of mass 3.40 kg attached to a spring of spring constant 187 N/m. When t = 1.00 s, the position and velocity of the block are x = +0.129 m and v = +3
The masses of the atoms are mH=1.67X10^-27 kg, mN=23.3X10^-27 kg, and mO=26.6X10^-27 kg. Locate the center of mass of this molecule relative to the hydrogen atom.
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0 s. What is the apparent weight of a 60.0-kg passenger when she is at the bottom of the wheel?
Two moles of a monoatomic ideal gas are contained at a pressure of 1 atm and a temperature of 300k. 34166j of heat are transferred to the gas, as a result of which the gas expands and does 1216j of
Find the magnitude and direction of the total momentum of this two-arrow system. Specify the direction with respect to due east.
A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it hits the floor, assuming that the end on the floor does not slip. (Hi
The friction force on the sled is 1127 N and the angle between the two ropes is 18°. How hard must each player pull to drag the coach at a steady 2.19 m/s?
A proton moving at 4.0 10^6 m/s through a magnetic field of magnitude 1.70 T experiences a magnetic force of magnitude 8.20 10^-13 N. What is the angle between the proton's velocity and the field?
A third force is applied and balances to zero the effects of the other two. What are the magnitude and direction of this third force? Specify the direction relative to the negative x axis.
A 165 pF capacitor is connected in series with an unknown capacitor, and as a series combination they are connected to a battery with an emf of 21.3 V. If the 165 pF capacitor stores 112 pC of char
A torque of 25.0 N·m on a certain wheel causes an angular acceleration of 21.0 rad/s2. What is the wheel's rotational inertia?
A second skater initially at rest with a mass of 60.0 kg catches the snowball. What is the velocity of the second skater after catching the snowball in a perfectly inelastic collision?
A guitar string is 74 cm long and has a mass of 3.6 g. The distance from the bridge to the support post is L = 60 cm, and the string is under a tension of 519 N. What is the frequency of the fundame
What is the electric force that the nucleus exerts on such an electron? What is the acceleration that this force produces on this electron? Treat the electron as a classical principal.
Each disk has a charge per unit area of 2.5 x 10^-8 C/m^2. What is the electric force between the disks when they are separated by a 2.0m?
Coyote launches himself across the gorge with the same initial speed but at a different launch angle. To his horror, he is short of the other lip of .5 m. What was his launch angle?
In a popular amusement park ride, a rotating cylinder of radius 4.00 m is set in rotation at an angular speed of 6.00 rad/s. The floor then drops away, leaving the riders suspended against the wall
A 10 kg ball moving at 20 m/sec collides elastically with a stationary 6 kg ball. The 6 kg ball moves off at a speed of 10 m/sec. What is the speed of the 10 kg ball?
A potential difference of 5.0×10-2 is developed across a 10-cm-long wire as it moves through a magnetic field at 5.0 . The magnetic field is perpendicular to the axis of the wire. What is the
What is the magnitude of the frictional force between her skis and the snow? (b) What is the coefficient of kinetic friction between her skies and the snow?
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 1.2 cm, and the toy is released. If the spring constant is 103 N/m, what
Calculate the work done in lifting a 500N barbell 2.2m above the floor. What is the potential energy of the barbell when it is lifted to this height?
The collision is elastic and after the collision cart2 continues to move in its original direction at 0.527 m/s. Find m, the mass of cart1. Find the speed of cart1 after the collision.
The coefficient of kinetic friction was estimated to be .42 Use these data to determine the speed of the car when the driver slammed on (and locked) the brakes.