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a child is born after 39 weeks in its mothers womb. if the childs birth mass is 3.5kg, how much mass on average does the fetus gain each day in the womb.
A force of 45 N acts on a ball for 0.2 sec If the ball is initially at rest, What is the final momentum of the ball
An electric heater is constructed by applying a potential difference of 110 V across a wire with a resistance of 5.0 W
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 6.2 mm in diameter. what is the angular spread of the beam
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 117-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
if you hold a 40 cm high square plane mirror 45 cm from your eyes, how far are you from the pole
A horizontal magnetic field of 1.0x10^(-4) T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long, what is the magnitude of the force on the wires
Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball. Estimate the feather's drag coefficient
questionthink the sun to be at the origin of a xy-coordinate system. a telescope spots an asteroid in the xy-plane at a
An unstable particle with a mass equal to 3.34 ? 10-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.988c and -0.865c, respectively. Find the masses of the fragments
A 0.037 kg aluminum bullet traveling at 460 m/s strikes an armor plate and comes to a stop. what is the bullet's temperature change in degrees Celsius
An object 2.5 cm tall is placed 23.2 cm from the front of a concave mirror with a radius of curvature of 33.1 cm. How tall is it
A monatomic ideal gas is held in a thermally insulated container with a volume of 0.0850m^3 . The pressure of the gas is 105kPa , and its temperature is 357K a)To what volume must the gas be compressed to increase its pressure to 150kPa b)At what ..
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