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A spacecraft can attain a stable orbit 300 kilometers above Earth if it reaches a velocity of 7.7 kilometers per second. The formula for a? rocket's maximum velocity v in kilometers per second is vequals=minus-0.0098+c ln R?, where t is the firing time in? seconds, c is the velocity of the exhaust in kilometers per? second, and R is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. Find the velocity of a spacecraft whose booster rocket has a mass ratio of 34?, an exhaust velocity of 2.7 ?km/s, and a firing time of 40s. Can the spacecraft achieve a stable orbit 300 km above? Earth? The maximum velocity of the spacecraft is approximately how many km/s
water vapor consists of nonlinear polyatomic molecules so all three rotational modes are excited at ordinary
A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin(2?t), Find the resonance angular frequency of the system
A 2250 kilogram car traveling at 10.0 m/s collides with a car of mass 2750 kilogram that is initially at rest at a stoplight. Find the coefficient of kinetic friction between the road and the cars
an airplane travels 85 km,62degrees north of east. Its displacement is represented by the vector A in the drawing
What is the average power dissipation in a series of RC circuit if R=5.00 k-ohm, C=3.00 ?F and V= (170V)cos300t
An alert physics learner stands beside the tracks as a train rolls slowly past. obtain the speed of the train
1. List a few applications of DSSS and OFDM. 2. What is connection between the bandwidth of DSSS and the PN sequence
Electromagnetic wave 1 has a maximum electric field of 56V/m , and electromagnetic wave 2 has a maximum magnetic field of 2.0muT, Calculate the average intensity of the first wave
A 2.9 cm-diameter parallel-plate capacitor has a1.8mm spacing. The electric field strength inside the capacitor is 9.0E4V/m. What is the potential difference across the capacitor
A solenoid is designed to produce a magnetic field of 0.220 T at its center. It has radius 4.00 cm and length 100.0 cm, and the wire can carry a maximum currentof 8.0 A.
The pilot of an aircraft wishes to fly due west in a 30.8 km/h wind blowing toward the south. In what direction should the aircraft head
find speed at which the ball left the quarterback's hand.
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