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A small steel ball bearing with a mass of 22.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.39 m. Calculate the hori
A car moving at 10 m/s crashes into a barrier and stops in 0.50 s. There is a 20 kg child in the car. Assume that the child's velocity is changed by the same amount as the car's in the same time pe
A m2 = 4.72 kg mass is connected by a light cord to a m1 = 2.71 kg mass on a smooth surface. Assuming that the cord does not slip on the pulley, find the acceleration of m1.
A child goes down a playground slide with an acceleration of 1.40 . Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 31.0 below the h
A 7.50-L container holds a mixture of two gases at 33 °C. The partial pressures of gas A and gas B, respectively, are 0.227 atm and 0.852 atm. If 0.220 mol of a third gas is added with no change
What is the momentum of a photon of lowest energy in the Balmer series of hydrogen?
A rocket of total mass M and with burnout mass 0.20 M attains a speed of 3 200 m/s after starting from rest in deep space. What is the exhaust velocity of the rocket?
A track consists of a frictionless arc XY, which is a quarter-circle of radius R, and a rough horizontal section YZ. Determine the amount of kinetic energy lost due to the collision.
An object weighs 277 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 221 N. When it is immersed in oil, it weighs 257 N. Find the density of the object.
Sam, whose mass is 61.0 , takes off down a 45.0 high, 11.0 slope on his jet-powered skis. The skis have a thrust of 190 . Sam's speed at the bottom is 35.0 . What is the coefficient of kinetic fric
Two gases, A and B, are mixed together. If 3.50 mol of A is mixed with 0.750 mol of B and the final pressure of the mixture is 3.25 atm, what are the partial pressures of A and B?
A ball is projected straight up from the ground with initial speed v0=200m/s and when it falls back it hits the ground with speed v1=50m/s. The mass of the ball is m=20g. What is the total work done
Assuming that the cancerous growth has a mass of 0.17 kg, calculate how much energy it absorbs. Assuming the growth to have the specific heat of water, determine its increase in temperature.
What is the magnitude of the normal force exerted on the car by the walls of the cylinder at point A (at the bottom of the vertical circle)?
In a particular metal, the mobility of the mobile electrons is 0.0049 (m/s)/(N/C). At a particular moment, the electric field everywhere inside a cube of this metal is 0.051 N/C in the +x direction
A long wire lying along the x-axis carries a current of 1.00A in the +x direction. There is a uniform magnetic field present, given by B=0.003 i + 0.004 j + 0.002 k, where i,j,k are the unit vectors
A buffer solution is prepared by dissolving 3.13 mol of HCN (Ka = 4.0 x 10-10) and 4.32 mol of KCN in enough water to make 3.42 L of solution. What is the pH of this solution?
A 0.265 kg skeet (clay target) is fired at an angle of 29 degrees to the horizon with a speed of 29.9 m/s. When it reaches the maximum height, h, it is hit from below by a 15m g pellet traveling ver
A mountain climber jumps a 2.7 m wide crevasse by leaping horizontally with a speed of 8.8 m/s. If the climber's direction of motion on landing is -45°, what is the height difference between the t
A circular loop in the plane of the screen lies in a 0.84 T magnetic field pointing into the screen. If the coil resistance is 2.5 , what is the average induced current?
A mass of 5.60 kg rests on a smooth surface inclined 28.5o above the horizontal. It is kept from sliding down the plane by a spring attached to the wall. the spring is aligned with the plane and has
Another car is seen in this side mirror and is 13 m behind the mirror, if the car is 1.5 m tall, what is the height of its image?
Ethylene glycol (C2H6O2) is used as an antifreeze in cars. If 400 g of ethylene glycol is added to 4.00 kg of water, what is the molality? Calculate how much the freezing point of water will b
When you consider the electromagnetic spectrum containing visible light and X-rays, both are emitted from
A car traveling at 87 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.80 m. What was the average acceleration of the driver during the collis