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A rocket of total mass 3180 kg is traveling in outer spacewith a velocity of 115 m/s toward the Sun. It wishes to alter itscourse by 30.0°, and can do thisby firing its rockets briefly in a direction perpendicular to itsoriginal motion. If the rocket gases are expelled at a speed of1770 m/s, how much mass must be expelled?
A solid disk (mass = 5 kg, R=0.6 m) is rolling across a table with a translational speed of 9 m/s. What is the total kinetic energy of the disk
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. calculate the heat lost by each body from the vaporization of sweat
Two bars of identical mass are at 30 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J / (kg • C°).
A string with a mass per length of 2.00 gm/m is stretched with a force of 120 N between two points that are 0.400 m apart. What is the length of the organ pipe
When a potential difference of 160 V is applied to the plates of a parallel-plate capacitor, What is the spacing between the plates
In diving to a depth of 983 m, an elephant seal also moves 693 m due east of his starting point. What is the magnitude of the seal's displacement
A projectile of mass m is fired from the surface of the earth at an angle a from the vertical, where a = 0.75 radians. Calculate the maximum height that the projectile will reach
A shell is fired from a gun with a muzzle velocity of 35 m/s, at an angle of 60° with the horizontal. How far from the gun does the other fragment land
A balloon is filled with helium at a pressure of 1.0 105 Pa.The balloon is at a temperature of 23°C and has a radius of0.18 m. How many helium atoms are contained in the balloon
A 56 kg pole vaulter running at 10m/s vaults over the bar. Her speed when she is above the bar is 0.7m/s. Neglect air resistance, as well as any evergy absorbed by the pole, and determine her altitude as she crosses the bar.
Four identical masses of 3.2 kg each are located at the corners of a square with 1.1 m sides. What is the net force on any one of the masses
80 mA of current flows through a resistor connected in series to a 4.25v battery. What is the resistance of the resistor
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