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A large punch bowl holds 3.95 kg of lemonade (which is essentially water) at 20.0° C. A 0.42-kg ice cube at 10.2° C is placed in the lemonade. What is the final temperature of the system and the amount of ice (if any) remaining? Ignore any heat exchange by the bowl or the surroundings.° C kg
a road rises 1ft for every 100ft it travels horizontally it is said to have a 15 grade. if the road you are traveling on has a 5 % grade what is the angle of the road above the horizontal
The force of repulsion among two liked charges is 4.5 N. what will the force be if the distance among the charges is increased to five times its original value?
A small piece of dust of mass m = 1.6 g travels horizontally through an electric air cleaner in which the electric field is 511 N/C. What is the charge on the dust particle
A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 8.80 cm. If the cork is 13.5 m from shore, how long does it take a ripple passing the cork to reach the shore?
Identical conducting spheres
Traveling at a speed of 14.1 m/s, the driver of an car suddenly locks the wheels by slamming on the brakes. Find the speed of the automobile after 1.16 second has elapsed
If the bullet has a mass of 21.0 g and a speed of 235 m/s, explain how high will the block rise into the air after the bullet becomes embedded in it?
A skydiver of mass m, jumps from an aircraft at an altitude of h metres, with an initial speed of 0 m/s. She opens her parachute andlands with a final speed of v m/s. Which expression is equal to the energy dissipated by air resistance during the..
A person's prescription for her new bifocal glasses calls for a refractive power of -0.461 diopters in the distance-vision part, and a power of +1.83 diopters in the close-vision part. Find the near and far points of this person's uncorrected visi..
The rear window of a car consists of thirteen thin wires (resistivity = 88.0 * 10^-8 ohms) embedded in the glass. Find the cross-sectional area of each wire
A brass wire is to withstand a tensile force of 350N without breaking. What minimum diameter (in mm) must the wire have
A 150kg uniform board 8m long is supported by two posts: one 1m from the left and the other 2m from the right. Find the forces on the supports
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