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In the 1994 movie Speed, a bus wired with explosives must maintain a speed of 50mph or the bus will explode. In one of the movie's climactic scenes, the bus jumps a 50 ft. gap in the freeway. If the bus speeds up to 70mph before reaching the gap, what is the minimum launch angle required for the jump to be successful? Does the movie portray the physics adequately? You will probably need ti use the following trig identity: 2sin(theta)cos(theta)=sin2(theta).
A proton has a mass of 1.67 x 10^-27 kg and a charge of 1.60 x 10^-19 C. What is the gravitational force on a single proton at Earth's surface.
A 20 {rm kg} child plays on a swing having support ropes that are 2.3 {rm m} long. A friend pulls her back until the ropes are 39.0^circ from the vertical and releases her from rest.
One hundred k mol of a gas containing 94.4 mole% methane, 3.40% ethane, 0.60% propane, and 0.50 percent butane is to be burned with 17% excess air. Calculate the required molar flow rate of the air.
The current in a 4.70 mH inductor decays over time according to the following function, What is the induced emf across the inductor at t= 5.00 ms
A jeweler working with a heated 47 g gold ring should lower the ring's temperature to make it safe to handle. If the ring is initially at 99 degrees Celcius, what mass of water at 25 degrees Celcuis is needed to lower the ring's temperature to 38 ..
A window in a house is rectangular, with height 49 cm and width 29 cm. What is the force on the window
A step-up transformer has 300 turns on its primary coil and 90000 turns on its secondary coil if the current flowing through the secondary is 5 amps what is the current flowing in the primary.
What is the difference between the acceleration of his head and feet if the astronaut is 2.00 m tall.
A rigid (constant volume) container holds 4.6 moles of an ideal gas initially at 190 K and 2.0 atm. How much gas is in the container at the final pressure and temperature
The spring constant for the tendon is the same for both groups, 32 {rm {N}/{mm}} . What is the difference in maximum stored energy between sprinters and nonathletes.
Consider the earth following its nearly circular orbit (dashed curve) about the sun. find the size of the gravitational force acting on the earth
The lens and mirror are separated by d = 1.00 m and have focal lengths of +80 cm and -50 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.
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