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An object is placed in front of a concave mirror with a 24.1-cm radius of curvature. A real image twice the size of the object is formed. At what distance is the object from the mirror? Take a positive answer to be in front of the mirror, and a negative answer to be behind the mirror.
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0°C and rejects heat to a room at 22.5°C. How much heat is discharged into the room
During 5 successive 0.93 min intervals, a runner moves at the following constant speeds: 0.440 km/min, Compute the total distance traveled and the average speed
A roof tile falls from rest from the top of a building. How far abovethe top of this window is the roof
Two capacitors (2,0 uF and 4,0 uF) are connected in series across 300-V potential difference. Calculate the total stored energy in the system
In a period of 1.0 s, 5.0 x10^23 nitrogen molecules strike a wall of area 7.80 cm2. If the molecules move at 270 m/s and strike wall head on in a perfectly elastic collision, find the pressure exerted on the wall. (The mass of one N2 molecule is 4..
A massless pan hangs from a spring that is suspended from the ceiling. What is the pan's distance from the ceiling when the spring reaches its maximum length
A small solid ball of mass M and radius R rolls without slipping on the track whose height y as a function of horizontal position x is given by y=ax^2, Find an expression for the period of the resulting motion
Light of wavelength 653.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 83.5 cm from the slit. obtain the width of the slit
A small hole of a 2.6 cm diameter has developed in the hull of a ship 4.0 m below the waterline. At what rate is water flowing into the ship
Object O1 is 14.7 cm to the left of a converging lens with a 12.0-cm focal length. What is the focal length of the second lens
A 4.15 g lead bullet traveling at 316 m/s is stopped by a large tree. what is the increase in temperature of the bullet
A car is traveling along a straight road at a velocity of +31.0 m/s when its engine cuts out. For the next ten seconds, the car slows down, and its average acceleration is a1.
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