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What is the wavelength of an electromagnetic wave (in vacuum) of frequency 5.6 GHz?
A child goes down a playground slide with an acceleration of 1.10 m/s^2. Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 29.0 degree
Find the tension in the cable, the horizontal force exerted on the beam by the pole and the vertical force exerted on the beam by the pole.
A 50-Omega resistor, a 0.1-H inductor, and a 10-mu F capacitor are connected in series to a 60-Hz source. The rms current in the circuit is 3 A. Find the rms voltage across the resistor, the induct
Which of the following statements about pure water is true?
A laser beam is incident on a 34°-56°-90° prism perpendicular to one of its faces, as shown in the figure below. The transmitted beam that exits the hypotenuse of the prism makes an ang
The International Space Station makes 15.65 revolutions per day in its orbit around the earth. Assuming a circular orbit, how high is this satellite above the surface of the earth?
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