01/09/23

80 nickels and dimes were dropped into a machine and got paid $7.15 for all of them. How many dimes were dropped into the machine?
I need how many dimes AND nickels were dropped into the machine
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11/09/20

physics problem

A car moving at speed v enters a curve of radius R. It is possible to bank the curve at just the right angle so that you don’t need friction to maintain the car’s turning radius. Your... more
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11/09/20

Due to accidental mixing of Wyzant questions, you accidentally shoot a dart into the air in a parabolic trajectory which subsequently hits you and injects 80 g of CO2.
Assume that the CO2 immediately assumes your body temperature and standard pressure, thereby inflating your interperitoneal space. None leaks out. In your alarm, you fall backwards into a vat of... more
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11/08/20

How long does it take the Sun to deliver to earth the total amount of energy humankind uses in a year?
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11/06/20

How large is the force that the catapult must exert on the jet?
On aircraft carriers, catapults are used to accelerate jet aircraft to flight speeds in a short distance. One such catapult takes a 17,600-kg jet from 0 to 68 m/s in 2.6 s. (Assume the catapult... more
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