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a box rests on the ice of a frozen pond. A man applies a horizontal force of 48 N to the box causing the box to accelerate at 3 m\s^2. What is the mass of the box?
Anita and Nick are playing tug-of-war near a mud puddle. They are each holding on to an end of a taut rope that has a knot exactly in the middle. What is the location of the knot relative to the center of the puddle
Chiana is stalking a fly of mass 0.10 g, but the fly gets caught in a spider's web. What is the value of the effective spring stiffness constant k for the web
A 27.4 kg runaway grocery cart runs into a spring with spring constant 387 N/m and compresses it by 75.5 cm. What was the speed of the cart just before it hit the spring
One mole of an ideal gas does 1408 J of work on the surroundings as it expands isother- mally to a final pressure of 1.6 atm and vol- ume of 29L. Find out the initial volume.
a 1cm-tall object is 6cm in front of a converging lens with a focal length of 10cm. Use ray tracting to determine the location of the image on graph, Calculate the image position and height using the lens equation
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8x10^7m and its rotation period to be 22.3 hours, find the mass of the planet and star
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 64 kg person develops a power of 65W throughout a race, how fast is the person running? Assume that a running step is 1.5 m long.
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. Determine the intensity level of the infrasound
A 120 granite cube slides down a 40 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 290 steel cube at rest. How high above the table should the granite cube be released to give steel cube a spe..
What is the final velocity of a hoop that rolls without slipping down a 6.50 m high hill, starting from rest
An explosive shell, with total mass 80 kg is launched vertically into the air from a mortar. The shell explodes in flight and breaks into two parts with masses of 30 kg and 50 kg, Determine where the other portion of the shell landed
It's generally okay to ignore relativistic effects when a particle's speed is less than 1.0% of the speed of light, Find the accelerating potential difference that will bring electrons to that speed, starting from rest
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