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A rock is thrown with initial velocity of 10 m/s and falls 50 m from the base of the cliff. The second rock is thrown with 15 m/s how far away from the base of the cliff does the rock land?
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
A 20cm long hollow tube of inner diameter 2.8nm, outer diameter 3.0mm is connected to a battery. what is the potential drop across the tube
In an experiment like you are going to do in Investigation 1 of lab this week, you count the number of beta rays from a 137Cs source. What is the average number of counts
An electronic device dissipating 30 W has a mass of 20g and a specific heat of 850 J/kgoC. The device is lightly used, and it is on for 5 min and then off for several hours, throughout which it cools to the ambient temperature of 25 o C.
You are standing midway between a ceremonial cannon and a reflective wall. How far apart are the cannon and the wall
A loaded railroad car of mass 6000 kg is rolling to the right at 2.0 m/s when it collides and couples with an empty freight car of mass 3000 kg, What is the velocity of the pair after the collision
What is the Lens Equation? What do o, i and f stand for in the equation and what are the five parts of the Optical Bench used in this experiment? Briefly describe what each part does.
Pick at least two sample cases and for each sample case include both a physical reason you'd expect fo to go up or down (think about how sound waves are squishing together or spreading apart) and a mathematical reason (like will picking a + in the..
A 0.65-g particle remains stationary when placed in a uniform electric field (on earth). What is the electric field's direction
The speed of sound in air at room temperature is 340 m/s. What is the frequency of a sound wave in air with wavelength 1.3 m
A 900kg car strikes a huge spring at a speed of 24m/s(Figure 1) , compressing the spring 5.5m. compute the spring stiffness constant of the spring
A 3.83 ohm resistor, a 7.53 ohm resistor, and a 9.02 ohm resistor are connected in series with a 15.0 V battery. What is the current in each resistor
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