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A ball is being thrown towards a wall with 25.0 m/s in a 40 degree angle. The distance to the wall is 22.0m
a) How high will the ball hit the wall?
b) What is the horizontal component and vertical component of the ball when it hits the wall?
c) When the ball hits the wall, has it reached its vertex?
Iodine-131 has a half-life of 8 days. A 2-gram sample of at first pure iodine-131 is stored for 32 days. How various grams of iodine-131 remain in the sample afterwards.
A piano tuner stretches a steel piano wire with a tension of 830N . The wire is 0.400m long and has a mass of 3.10g. What is the frequency of its fundamental mode of vibration
How high will a 1.85 rock go if thrown straight up by someone who does 75 of work on it? Avoid air resistance.
Kathy tests her new sports car by racing with Stan, an experienced racer. Both start from rest, Find the distance she travels before she catches him
A step-up transformer for long-range transmission of electric power is used to create a potential difference of 1.0921 x 10^5 V across the secondary. How many turns are in the primary
A vertical solid steel post 25 cm in diameter and 3.50 m long is required to support a load of 7100 kg. You can ignore the weight of the post. What is the strain in the post
A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. What is the length of the rotating string
When a carpenter shuts off his circular saw, the 10.0 inch diameter blade slows from 4250 rpm to 0.00 in 1.00 s. What is the distance traveled by a point on the rim of the blade during the deceleration
Inside an insulated container, a 250-g ice cube at 0 °C is added to 200 g of water at 18 °C. What is the remaining ice mass
A 10cm long thin glass rod is uniformly charged to +50nC. A small plastic bead, charged to -5.3nC,is 4.4cm from the center of the rod
A laser beam passes through a single slit. We observe an interference pattern on a screen 9.03 m away. Find the width of the slit
A room with dimensions 7M X 8M X 2.5M is to be filled with pure oxygen at 22.0 degrees C and 1.00 atm. The molar mass of oxygen is 32.0 g/mol. How many moles of oxygen are required to fill the room
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