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Fleas can jump quite high; experiments show that they reach an altitude of 130 times their own height when they jump vertically! Suppose instead that a flea can jump so that it lands a maximum distance of 21.60 cm away. What is the take-off speed for this flea? How tall is the flea?
What is the ideal banking angle for a gentle turn of 1.80 km radius on a highway with a 110 km/h speed limit (about 68 mph), assuming everyone travels at the limit
A wheel with radius 43.9 cm rotates 4.27 times every second. Find the period of this motion.
An ion source is producing 6Li ions, which have mass 9.99 x10-27 kg and charge +e. The ions are accelerated by a potential difference of 30 kV and pass horizontally into the region in which there is a uniform vertical magnetic field of magnitude B..
American football uses a field that is 100.0 yd long, whereas a soccer field is 100.0 m long. Which field is longer, and by how much
Suppose he enters the water at a speed of 16.0 m/s via path 1. Explain how fast is he moving on path 2 when he releases the rope at a height of 4.00 m above the water? Ignore the effects of air resistance.
An electron acquires 5.95×10?16J of kinetic energy when it is accelerated by an electric field from plate A to plate B
An electron with kinetic energy1.40keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is21.0cm. calculate the frequency of circling
A 2m3 balloon filled with helium at sea level climbs to 10,000 m. The temperature at sea-level is 20C, What is the volume of the balloon at 10,000 m
A dentist's mirror is placed 2.4 cm from a tooth. The enlarged image is located 6.4 cm behind the mirror. How is the image oriented relative to the object
A bullet is shot out of a gun with a 61 cm barrel at a speed of 410 m/s into a block of wood. The bullet enters the wood 13 cm. Illustrate what force does the block exert on the bullet? What is the time it takes?
A policeman is chasing a speeding car with a seed of 160 km/hr. the speeding car is moving with a speed of 120 km/hr. what frequency will the driver of the speeding car hear
A stopping car comes to a skidding stop after 5 m. If the road exerts a force of 600 N opposite to the direction of the motion: how much work does the road do on the car
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