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If a person can jump a horizontal distance of 3.0 m on Earth, how far could the person jump on the moon, where the free-fall acceleration is g/6 and g = 9.81 m/s2?
The 2-kg collar C is free to slide along the smooth shaft AB. Determine the acceleration of collar C if (a) the shaft is fixed from moving and (b) collar A is subjected to an acceleration of 2 m/s2
A 220 g block hangs from a spring with spring constant 12 N/m. At t=0;{rm s} the block is 31 cm below the equilibrium point and moving upward with a speed of 89.0 cm/s. What is the block's distance
Sound traveling in air at 23°C enters a cold front where the air temperature is 2°C. If the sound frequency is 1500 Hz, determine the wavelength in the warmer air and in the colder air.
What must the charge (sign and magnitude) of a particle of mass 1.45 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 620 N/C? Use 9.8m/s/s for the ma
A 0.16 kg block on a horizontal frictionless surface is attached to a spring whose force constant is The block is pulled from its equilibrium position at to a displacement and is released from rest
A 80 kg astronaut pushes off against a 640 kg satellite producing a force of 120 N for .5 seconds. What is the acceleration of each object during the push? what is the final velocity for each objec
An ideal gas occupies 329 cm3 at 20°C. At what temperature will it occupy 980 cm3 if the pressure remains constant? New temperature in Celsius?
A 2.50 kg block is in equilibrium on an incline of 31.6?. The acceleration of gravity is 9.81 m/s2. What is Fn of the incline on the block?
A 53.0 kg ballet dancer stands on her toes during a performance with four square inches (26.0 cm2) in contact with the floor. What is the pressure exerted by the floor over the area of contact in th
One of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 Hz and the next higher harmonic has a frequency of 576 Hz. The speed of sound in air is 343 m/
The force exerted by the wind on the sails of a sailboat is 310 N in the direction 78 degrees north of east. The water exerts a force of 210 N east. If the boat (including its crew) has a mass of 3
Draw a force body diagram of all the forces acting on the bucket at the top of the circle. What is the tension in the rope at the top of the circle? What is the tension at the bottom of the circle?
An object weighing 300 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 265 N. Immersed in oil, the object appears to weigh 275 N. Find (a) the
A thermos contains 155 cm3 of coffee at 85° C. To cool the coffee, you drop two 15-g ice cubes into the thermos. The ice cubes are initially at 0° C and melt completely. What is the final t
A parallel plate capacitor has plates of area 2.0x10^-3 m^2 and a plate seperation of 1.0x10^-4 m. Determine the capaitance of this system if air fills the volume between the plates.
A 120 ball moving to the right at 4.0 catches up and collides with a 430 ball that is moving to the right at 1.2 .If the collision is perfectly elastic, what is the speed of the 120 ball after the
A truck travels beneath an airplane that i moving 170 km/h at an angle of 51? to th ground. How fast must the truck travel to stay beneath the airplane?
A 11.5 kg object oscillates at the end of a vertical spring that has a spring constant of 1.65 * 10^4 N/m. The effect of air resistance is represented by the damping coefficient b= 3.00 Ns/m. (a) Ca
Two horizontal forces, 215 N and 128 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the crate.
For a damped oscillator with a mass of 240 g, a spring constant 59 N/m and a damping coefficient of 75 g/s, what is the ratio of the amplitude of the damped oscillations to the initial amplitude at
How much heat is released by the water when it freezes?
The wire has an unstretched length of 3.1 cm and a diameter of 0.22 mm. If the wire is stretched 0.10 mm, find the magnitude and direction of the force on the tooth. Disregard the width of the tooth
A rectangular air mattress is 2.0 m long, 0.50 m wide, and 0.08 m thick. If it has a mass of 2.0 kg, what additional mass can it support in water?
Two ants race acroos a table 74 cm long. One travles at4.64 cm/s, and the other at 3.99999 cm/s. when the first one crosses the finish line, how far behind is the second one? Answer in units of cm.