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Question1
A subway train starting from rest leaves a station with a constant acceleration. At the end of 9.34 s, it is moving at 15.0374 m/s. What is train's displacement in ?rst 5.99628 s of motion?
Question2
The mass of a copper atom is 1.56 10-25 kg, and density of copper is 8 920 kg/m3.
(a) establish the number of atoms in 1 cm3 of copper
(b) imagine the one cubic centimeter as created by stacking up identical cubes, with one copper atom at the center of each. Establish volume of each cube.
(c) Find out the edge dimension of each cube that represents an estimate for the spacing between atoms.
An object is 23.2 cm from the surface of a refiective spherical Christmas-tree ornament 5.11 cm in radius. What is the apparent position of the image
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.50 × 10-10 T. How much energy does this wave carry through the window during a 30 s phone call
The speed of a particle moving in a circle 2.0 m in radius increases at the constant rate of 4.4 m/s2. what is the speed of the particle
You stand in the earth's magnetic field, directly facing it's horizontal component ( in other words, facing magnetic south). Compute the outward flux through your body's back surface
A large tank is filled with methane gas at a concentration of 0.690 kg/m3. What is the cross-sectional area of the pipe
Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long, Find the concentration of oxygen in the air
Calculate the radius of its ground-state orbit, Calculate the energy of the electron in the ground state of double ionized lithium
The weight of passengers on a roller coaster increases by 51 percent as the car goes through a dip with a 39 radius of curvature.What is the car's speed at the bottom of the dip.
A cart loaded with bricks has a total mass of 21.2 kg and is pulled at constant speed by a rope. The rope is inclined at 27.2 ? above the horizontal and the cart moves 27.1 m on a horizontal floor. The coefficient of kinetic friction between groun..
A 46.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
An airplane needs to reach a velocity of 407 km/h to take off. On a 2000m runway, what is the least acceleration necessary for the plane to take flight.
An object is being pushed up an inclined plane with a constant force F = 100. N. The plane makes an angle of 30.0° with respect to the horizontal, What is the mass of the object
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