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A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.00 meter above. The keys are caught 1.50 second later by sister's outstretched hand.
Find with what velocity were the keys thrown?
Find what was the velocity of the keys just before they were caught?
What stage of the scientific method would someone be at if they make a prediction that drinking alcohol will make people more violent throughout a sporting event.
A dive bomber has a velocity of 230 m/s at an angle theta below the horizontal. When the altitude of the aircraft is 2.15 km, it releases a bomb, Find the angle theta
A piece of Nichrome wire has a radius of 7.2 x 10-4 m. It is used in a laboratory to make a heater that dissipates 3.30×102 W of power, estimate the necessary length of wire
An elderly person with a body mass of 65 kg is walking while using a cane in one hand. what is the magnitude of the vertical ground reaction force
An ore sample weighs 17.5 {\rm N} in air. When the sampleis suspended by a light cord and totally immersed in water, thetension in the cord is 11.2 {\rm N}. Find the total volume of the sample
Two wires are parallel (heading north-south). The current in each wire is northward. What is the direction of the magnetic field at the location of the right-hand wire due to the current in the left-hand wire? What is the direction of the magnetic fo..
What is the magnitude of the force that each sphere experiences, and is the force attractive or repulsive?(b) The spheres are brought into contact and then separated to adistance of 2.10 cm. Determine themagnitude of the force that each sphere now ..
An electron and a positron have masses of 9.11 10-31 kg. They collide and both vanish, with only electromagnetic radiation appearing after the collision. determine the energy of the electromagnetic radiation
A 1200 {\rm kg} car moving at 88 {\rm km/h} collides with a 7600{\rm kg} truck moving in the samedirection at 65 {\rm km/h} . The two stick together,continuing in their original direction at 68 {\rm km/h}. Determine the kinetic energy of the center..
a particle is trapped in an infinite square well in the first excited state .a what is the wavefunction of the
a 0.005 kg. bullet is fired at 300 ms east into a 10 kg. block of wood at rest. if the bullet sticks into the wood what
Fish are hung on a spring scale to determine their mass (most fishermen feel no obligation to report the mass truthfully). How far apart are the half-kilogram marks on the scale
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