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A.) Calculate the launch speed of a projectile that rises vertically above the earth to an altitude equal to one earth radius before momentarily coming to rest. Beware you cannot use the old expression of PE = mgh.
B.) What will be the minimum lanch speed so that it takes the projectile to infinity (escape speed)?
a lens with a focal length of 15cm is placed 50cm in front of a lens with a focal length of 5cm. how far from the
A cylinder with a diameter of 23 cm rolls with an angular speedof 0.40 rad/s on a levelsurface. If the cylinder experiences a uniform tangentialacceleration of 0.012m/s2 without slipping until itsangular speed is 1.41 rad/s, through how many compl..
A massless spring with spring constant k is compressed by an amount xo. What is the velocity of the combined masses (m+2m) just after the collision
An electron experiences the greatest force as it travels 1.02*10^6 m/s in a magnetic field when it is moving horizontally. The force is upward and of magnitude 1.75*10^-12 N. What is the magnitude of the magnetic field?
A 87 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 26.64, find the heat gained by the water
A 60 cm long rod has a 4.00 kg mass on one end and a 6.00 kg mass on the other end. How far from the center of the rod is its center of mass
A simple pendulum is 4.00 m long. What is the period of simple harmonic motion for this pendulum if it is hanging in an elevatoraccelerating upward at 7.00m/s2
A 4.4 cm radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 185 rad/s^2, How long is the plane
An electron is confined to a one-dimensional region in which its zero-point (n = 1) energy is 2.90 eV. What is the length of the region
A stationary spherical conductor with a radius of 2.00 cm has a potential of -257 V on the surface. What is the impact speed of the proton
How far away was the asteroid from Earth's center when the pictures were taken?
Three unknown resistors are in a bin; let's call them red, green, and blue. When a Physicist connects the three resistors in series to a 30 volt source she measures 1A of current. what is the charging time constant
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