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You are on a bridge which is a height 21 above the water. You first drop a ball and then 1.0 seconds later throw a second ball down so that both balls hit the water at the same time. (assume the positive y-direction is up)
At what time after you release the first ball does it hit the water?
With what velocity must the second ball be thrown downwards?
What is the speed of the first ball just before it hits the water?
What is the velocity of the second ball just before it hits the water?
In a certain region, the earth's magnetic field has a magnitude of 5.4 × 10-5 T and is directed north at an angle of 49° below the horizontal. Determine the bullet's electric charge
One method of determining the refractive index of a transparent solid is to measure the critical angle when the solid is in air. what is the index of refraction of the solid
q1. what are the average velocity and acceleration of the tip of an hour hand of a clock in the interval of noon to
Determine the heat transfer and work for each of the processes. What is the internal energy change for Process 1-2? What is the internal energy change for Process 2-3? (There is an answer posted for the same question, but the answer does not appea..
Two of the charges are negative and one is positive. Illustrate what work does the electric field have to do as these charges are assembled from infinity, without acceleration?
The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -69°C to +36°C. How can one compensate for this expansion
A gas with ?=75 is at 285K when it's compressed isothermally to one-third of its original volume and then further compressed adiabatically to one-fifth of its original volume
What is the partial pressure of oxygen in humidified air (RH= 100%) at body temp, if the barometric pressure is 750 torr
You can excite waves in a string of length 1.142 m fixed at both ends. You started from an arbitrarily low frequency and increased it slowly. What is the speed of the wave in the medium in m/s
An oil droplet(missing 3 electrons) is hovering inside some parallel plates that are separated by 3.0mm. what is the mass of the oil droplet
A uniform ladder of mass 50 kg and length 5m leans at an angle Theta against a frictionless wall. determine the minimum angle the ladder will not slip
The water was originally at 0°C. The specific heat of water = 1.00 kcal/kg×°C, The original temperature of the ice was:
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