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A 210 ball and a 670 ball are connected by a 45.0-cm-long massless, rigid rod. The structure rotates about its center of mass at 110 rpm. What is its rotational kinetic energy?
A 420 kg bear grasping a vertical tree slides down at constant velocity. What is the friction force that acts on the bear?
In the system of celestial coordinates that matches latitude and longitude upon the Earth, which is the coordinate that is equivalent to latitude?
A phonograph record of radius 6 cm and mass 15 g is rotating with an angular velocity of 33.33 rev/min. A penny of mass 1 g suddenly falls on the record and lands at a radial distance of 4 cm from
A styrofoam box used to keep drinks cold at picnic has total wall area(including the lid) of 0.80m2 and wall thickness 2.0 cm. it is filled with ice, water and cans at 0 Celsius. What is the rate o
The vertical component of the plane's velocity is 31.8 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
What is the tangential acceleration of a bug on the rim of a 10.0 in. diameter disk if the disk moves from rest to an angular speed of 79 revolutions per minute in 5.0 s
The block as shown in Fig.Q.No.2 is acted upon by its weight w=200lb, a horizontal force Q=600lb and the pressure P exerted by the inclined plane. The resultant R of these forces is up and parallel
Clearly, the car will eventually travel faster than the truck and will overtake it. Where will the car catch up with the truck?
A 2200-kg sport utility vehicle traveling at 86 km/h can be stopped in 0.15 s if it hits a concrete wall. Assume a 60 kg person was in the car that hit this wall. The velocity of the person equals
A force vector points at an angle of 26.9 ° above the +x axis. It has a y component of +465 newtons (N). Find (a) the magnitude and (b) the x component of the force vector.
When a particular mass-spring system is started by stretching the spring 5 cm, one complete oscillation takes 2 seconds.
A spring with a spring constant of 1.26 multiplied by 102 N/m is attached to a 1.5 kg mass and then set in motion. What is the period of the mass-spring system?
A square conducting loop 25 cm on a side lies at right angles to a uniform magnetic field. The loop's resistance is 7.0 , and it carries a current of 20 mA. At what rate is the magnetic field chang
An ice cube of mass 50.0 can slide without friction up and down a 25.0 slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 0.100 . The spring constant
And it travels at that speed for 15 mins before breakig to a stop. During the braking the distance covered was 100m. How the velocity, position, accleration graphs would look like?
Determine the forward current If and the voltage across at the 1k ohms load using practical and complex diode model. when rd=15 ohms and battery is 7V.
A rope 100 feet long weighing 2 pounds per foot hangs over the edge of a building 150 feet tall. How much work in foot-pounds is done in pulling the rope to the top of the building?
If the p erson's average speed is 61.1 km/h, how much time is spent on the trip and how far does the person travel?
Calculate the amount of electrostatic energy of a uniform sphere of charge with radius b and volume charge density ρ stored in the following regions: a) inside the sphere. b) outside the sphere
A 90-kg astronaut and a 1600-kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.24 m/s directly away from the shuttle. Seven-and-a-
A sailboat runs before the wind with a constant speed of 3.8 m/s in a direction 41.0° north of west, How far west has the sailboat traveled in 17 min?
A flywheel having constant angular acceleration requires 4.00 {rm s} to rotate through 167 {rm rad}. Its angular velocity at the end of this time is 109 {rm rad/s}. Find the angular velocity at the
An atomic nucleus of mass 238 u moving at 730 m/s emits an alpha particle of mass 4.0 u in the direction of its velocity. If the remaining nucleus slows to 640 m/s, what speed does the alpha partic
Boat A negotiates a curve whose radius is 300 m. Boat B negotiates a curve whose radius is 120 m. Each boat experiences the same centripetal acceleration. What is the ratio of the speed of boat A to