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A 30-kg shopping cart full of groceries sitting at the top of a2.0-m hill begins to roll until it hits a stump at the bottom ofthe hill. Upon impact, a 0.25-kg can of peaches flies horizontallyout of the shopping cart and hits a parked car with an an averageforce of 490N. How deep is the dent made in the car?
A train is approaching a highway crossing at a speed of 40 m/s. What frequency would the driver hear if the train stopped
Calculate the vertical distance a water ballon dropped from rest covers in 99.88 seconds of free fall
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 10 km from the source
Two containers hold identical amounts of a monatomic gas at 20. Container A is rigid. What are the initial pressures in containers A and B
A car starts from rest and then accelerates uniformly to a linear speed of 14 m/s in 38 s. If the tires have a radius of 28 cm, calculate the average linear acceleration of a tire
A charged particle of mass 1.56 g is moving at a speed of 1.39 104 m/s. the particle moves by a distance of 0.150 m in a direction perpendicular to the velocity. Find the charge on the particle
A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths
1. an atom has 8 protons and 17 nucleons. if it undergoes beta - decay what are the number of protons and neutrons
A 60-kg skier starts from rest from the top of a 50-m high slope. If the work done by friction is -6.0 x 103 J, what is the speed of the skier
A research balloon bound for the stratosphere is filled at sea level with 800 m3 of helium whose initial temperature is 285 K. What is the temperature of the helium
Suppose that the force exerted by the heart on the blood entering the aorta is 3.25N and the surface area of the aorta is 3.15cm square. Calculate the pressure of the blood in the aorta
The distance between the eyepiece and the objective lens in a certain compound microscope is 21.5 cm. What is the overall magnification of the microscope
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