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A helicopter blade spins at exactly 100 revolutions per minute. Its tip is 5.00 m from the center of rotation. (a) Calculate the average speed of the blade tip in the helicopter's frame of reference. (b) What is its average velocity over one revolution?
An arrow is shot from a height of 1.5 m toward a cliff of height H. It is shot with a velocity of 30 m/s at an angle of 60 degrees above the horizontal. It lands on the top edge of the cliff 4.0 s later. (a) What is the height of the cliff? (b) What is the maximum height reached by the arrow along its trajectory? (c) What is the arrow's impact speed just before hitting the cliff?
The weight of an astronaut plus his space suit on the Moon is only 250 N. How much do they weigh on Earth? What is the mass on the Moon? On Earth?
Two teams of nine members each engage in a tug of war. Each of the first team's members has an average mass of 68 kg and exerts an average force of 1350 N horizontally. Each of the second team's members has an average mass of 73 kg and exerts an average force of 1365 N horizontally. (a) What is the acceleration of the two teams? (b) What is the tension in the section of rope between the teams?
A runner taking part in the 200 m dash must run around the end of a track that has a circular arc with a radius of curvature of 30 m. If he completes the 200 m dash in 23.2 s and runs at constant speed throughout the race, what is his centripetal acceleration as he runs the curved portion of the track?
A 15 µF capacitor is connected to a 50 Volt battery and becomes fully charged. Find the capacitance of capacitors after slab is inserted
If the ClO2 partial pressure in the bulk gas phase is maintained at 0.06 atm, what is the maximum possible dissolved ClO2 concentration, g mol/m3, in the liquid phase that could possibly exit the process?
A 26.2-kg dog is running northward at 3.05m/s, while a 5.30-kg cat is running eastward at 3.53 m/s. find the direction and magnitude of the owner's velocity
how does the heliocentric theory explain the basic observation that mercury and venus are always observed to be close
In determining the specific heat of a new metal alloy, 150g ofthe substance is heated to 400C and then placed in a 200g aluminium calorimeter containing 400g of water at 10C. If the final temperature of the mixture is 30.5C, what is the specific h..
A U-shaped tube is partly filled with water and partly filled with a liquid that does not mix with water. what is the density of the liquid
You are standing 2.5 {rm m} straight in front of one of the two loudspeakers. They are 3 {rm m} apart and both are playing a 686 {rm Hz} tone in phase. As you begin to walk directly away from the speaker, at what distances from the speaker do you ..
Two ships are moving along a line due east (see figure below). The trailing vessel has a speed relative to a land-based observation point of v1 = 59.5 km/h, What frequency is monitored by the leading ship
What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum?
a steel wire in a piano has a length of 0.700 m and a mass of 4.300 10-3 kg. to what tension must this wire be
The vector v in the figure has the following components: vx=1, vy=2. what is the compent v parallel to the ramp
A student’s car stalls right in front of a speed bump while she is on her way to physics class. To pull it over the bump, she ties a cable to her bumper and to a nearby tree, and pulls with a force, F, of 77.0 lbs (343 N) at the midpoint in a perpend..
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