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A charged cork ball of mass 1.26 gram is suspended on alight string in the presence of a uniform electric field. When the electric field has an x component of 3.89E+5N/C, and a y component of 5.23E+5 N/C, the ball is in equilibrium at theta = 35 degree. Find what is the charge on the ball?
Electrons accelerated by a potential difference of 12.86 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength
two blocks m1 2.99 kg and m2 6.13 kg are in contact on a frictionless horizontal tabletop. an external force is
A 9820 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 20 mph, 29 degrees East of North. What is the net force (Fnet) acting on the boat
A 69.20-kg free runner jumps off a wall at a velocity of 6.95 m/s at an altitude of 2.37 m above the ground. What is the free runner's kinetic energy when he jumps off the wall
A uniform ladder 5.0 m long rests against a frictionless,vertical wall with its lower end 3.0 m from the wall. How far along the ladder can the man climb
A sample of an unknown material appears to weigh 300N in air and 200N when immersed in alcohol of specific gravity 0.700. What are the volume and density of the material
You are arguing over a cell phone while trailing an unmarked police car by 26.0 m; both your car and the police car are traveling at 120 km/h. what is your speed (in km/h) when you hit the police car
Air is flowing at steady state through a 5 cm diameter pipe at a flow rate of 0.35 mole/min at P = 5 bar and T = 500 K. It flows through a throttle valve and exits at 1 bar.
A jet airplane flying from Darwin, Australia, has an air speed of 256 m/s in a direction 5.0° south of west. What is the magnitude of the velocity of the airplane relative to earth
A hot air balloon has just lifted off and is rising at the constant rate of 1.70 m/s. How high is the passenger when the camera reaches her
The intensity of sunlight at the earth's surface is 1400W/m2, and the average wavelength is 550 nm. How many photons per second are absorbed with a perfect blackbody surface of area 1.25m2 perpendiculars to the sun's rays?
A 2720 - ? resistor and a 1.8 - ?F capacitor are connected in series across a generator (60.0 Hz, 120 V). Determine the power delivered to the circuit
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