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Finally, the student turns and walks a distance of 25.1 meters in a direction of 22 degrees south of east in 30.3 seconds. what is the average velocity (direction and magnitude) of the student durin
Finally, the student turns and walks a distance of 25.1 meters in a direction of 22 degrees south of east in 30.3 seconds. What is the final displacement of the student from the starting point?
A vernier scale improves the precision of a measurement. Let us compare a standard meter stick to the Vernier calipers used in this lab. Each of these instruments has a least count of 1mm.
Three astronauts, propelled by jet backpacks, push and guide a 120 kg asteroid towards a processing dock, exerting the force the force shown fing 5-29, with F1= 32 N, F2= 55N , F3= 41 N, θ1= 3
A 2.17 kg cat sees a fish laying on a counter top that his human companion is about to prepare to eat. The at is initially 1.21 meters from the counter. The counter is 1.25 meters high.
A diver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.3 kg·m2. He then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s
The ratio of the kinetic energy to the potential energy of a certain object of mass m at a height of 40 m above ground level is 2:1. What is the speed of the object at the point? Use g = 10 m/.
A person is making homemade ice cream. She exerts a force of magnitude 20 N on the free end of the crank handle, and this end moves in a circular path of radius 0.32 m. The force is always applied p
What is the magnetic flux through the loop at the instant the normal to the loop makes an angle of 0° with the magnetic field?
A single-turn wire loop 10 cm in diameter carries 5 A current. What is the magnetic dipole moment of this current?
A 4.5-kg brick is suspended by a light string from a 2.0-kg pulley. The brick is released from rest and falls to the floor below. The pulley may be considered a solid disk of radius 1.5 m. What is t
In the distant future, an astronaut drops a wrench on an alien world. The wrench falls from rest a distance to 1.22 m to the ground, and it takes .672 seconds to fall. What is the acceleration due t
The electromagnet of a bell is wound with 8.2 m of copper wire of diameter 0.45 mm. What is the resistance of the wire? What is the current through the wire if the electromagnet is connected to a 12
A certain air-gap, parallel plate capacitor can store no more than 0.075 J of electrical energy before breaking down. How much energy can this capacitor store without breaking down after the gap bet
The aircraft fueled and loaded has a mass of 441,000 kg. It must achieve a minimum airspeed of 82.2 m/s in order to take off. If the aircraft takes off from a full stop, what is the minimum length o
A parallel-plate capacitor with a plate area of 8.0 x 10^-2 m^2 and a plate separation of 1.0 x 10^-4 m is filled with polyethylene. If the potential difference between the plates is 2.0 x 10^4 V, w
Commercial platinum resistance thermometers are often manufactured with a resistance of 100.0 Ω at 0.0 degrees Celsius. The temperature coefficient of resistivity is 3.9 x 10^-3/degree Celsius
The electromagnet of a bell is constructed by winding copper wire around a cylindrical core, like thread on a spool. The diameter of the copper wire is 0.45 mm, the number of turns in the winding is
A conducting wire of length 2.0 m is connected between the terminals of a 12-V battery. The resistance of the wire is 3.0 Ω. What is the electric current in the wire? What is the electric fiel
The electric current in the lightbulb of a flashlight is 0.50 A. How much electric charge flows through the lightbulb in one hour? How many electrons pass through the lightbulb.
A point charge, q, of magnitude 1x10^-6 Coul, is place a distance a = 10cm from a neutral conducting sphere of raduis R = 5cm. a. What is the net force on the point charge?
If there is an 7.0 km/h ocean current running in a direction 20 N of E, what is the velocity of the ship with respect to the land?
A Styrofoam cup holding 98 g of hot water at 1.00 x 102°C cools to room temperature, 19.7°C. What is the change in entropy of the room? (Neglect the specific heat of the cup and any change i
The moon orbits the earth at a distance of 3.8X10^8 m. Assume that this distance is between the centers of the earth and the moon and that the mass of the earth is 5.98X10^24 kg. Find the period for
Two identical blocks are stacked one on top of the other. The bottom block is free to slide on a frictionless surface. The coefficient of static friction between the blocks is 0.35. What is the maxi