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A 785 Hz sound wave travels through a gas. If the wavelength of the sound is 0.6 m, what is the speed of sound in the gas
The force on a string is 198 N and the string's linear mass is 1.9 kg/m. What is the speed of waves on the string
a car traveling 85km/h strikes a tree. the front end of the car compresses and the driver come to rest after traveling 0.80m
A player passes a basketball to another player who catches it at the same level from which it was thrown. The initial speed of the ball is 8.1 m/s, What was the initial direction of the ball
A lava bomb is a missile composed of cooling, practicallysolid lava. You are a geologist, watching a volcano launch a lava bomb straight upward. find the Initial Speed at which the lava bomb got laun
The block in the figure below has a mass of 5.7 kg and it rests on an incline of angle %u03B8. determine the angle of the incline
A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory, What was the ball's launch angle
A car is traveling at 95.0 km/hr when it collides with a stone wall. The car comes to rest after the first 30.0 cm of the car is crushed. what would the average force acting on the driver
A 14,240N car is traveling along a highway at 95.0 kn/hr. If the driver immediately applies his breaks, what average force acted upon the car
A hydraulic ram 200mm in diameter and 1.2 m long moves wholly within a concentric cylinder 200.2mm in diameter, What is the viscous force resisting the motion when the ram moves at 120mm . s-1
At an absolute pressure of 101.3 kPa and ten mperature of 20 degC the dynamic viscosity of a certain diatomic gas is 2*10^-5 Pa.sec, calculate its approximate relative molecular mass
A 2.05-kg block is on a plane at 19 degrees with respect to the horizontal. The coefficent of static friction between the block and the plan is 0.80. How many forces are acting on the block
You and a close friend stand facing each other. You are as close as you can get without actually touching. If a wire is attached to each of you, estimate the capacitance of this "human capacitor
A tuning fork with a frequency of 440 Hz is held just above the top of a uniform glass tube containing water. What is the speed of sound in air
A thermally isolated flask containing helium gas initially at 11 K, allows the gas to slowly escape through a small tube until the pressure inside is 0.98 atm, what was the initial pressure
A small object of mass 0.0150kg & a charge of 3.1 uC hangs fromthe ceiling by a thread. determine the tension in the thread
In Mexico, a courageous diver runs horizontally off the edge of a sea side cliff 48.8 m above the sea (about six stories high). Calculate her speed and direction angle of her velocity as she hits the
Joe pushes down the length of the handle of a 12.6 kg lawn spreader. What force must Joe apply to the handle
Calculate velocity of electron in first Bohr orbit of hydrogen atom (Given r = a0). Find de-Broglie wavelength of the electron in first Bohr orbit
After catching the ball, Sarah throws it back to Julie. The ball leaves Sarah's hand a distance 1.5 meters above the ground, What is the speed of the ball when it leaves Sarah's hand
An oversimpliefied model of the hydrogen atom has the electron orbiting the nucleus's proton at a distance of approximately 5.29x10^-11 m. how much force is needed to keep the electron in a circular
A high driver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting at rest. what average upward force did the water exert on her
A softball pitcher throws a ball straight upward as hard as she can. According to your stopwatch, What is the maximum height reached by the ball
A 64-kg man standing on a scale in an elevator notes that the elevator rises, the scale reads 827 N. What is the acceleration of the elevator
You are to drive to an interview in another town, at a distance of 200 km along a straight road from your home.The interview is at 9:15 A.M. Calculate your average speed for the entire trip