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The wooden box is sitting on a spring scale which fully supports it. What is the reading of the spring scale while the pellet is freely falling inside the box?
1. M g
2. 3/2M g
3. M g/2
4. 2M g
Two planets are on a collision course, heading directly toward each other at 0.250c. A spaceship sent from one planet approaches the second at 0.750c as seen by the second planet. find the velocity of the ship relative to the first planet
1. starting from rest a proton falls through a potential difference of 2700 v. what speed does it acquire?2. a long
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. What is the volume flow rate through the pipe
A cart is placed on an inclined plane (a wooden board which is seton an angle) and attached to a pulley by a rope at the end of thewooden board. On the other side of the rope, hanging below theinclined plane is a weight.
Two very large charged parallel metal plates are 13cm apart and produce a uniform electric field of 2.76×10^6 N/Cbetween them. How much work has the electric field done on this proton by the time it reaches the positive plate
How far in front of the cattle should the pilot release the hay so that the bales will land at the point where the cattle are stranded.
When you touch a friend after walking across a rug on a dry day, you typically draw a spark of about 2 mm. Estimate the potential diference between you and your friend before the spark
A rocket of mass 4.5 x 105 kg is in flight.Its thrust is directed at an angle of 54.0° above the horizontal and has a magnitude of8.90 x 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the hor..
An electromagnetic wave propagates along the +y direction, If the magnetic field at the origin is along the +x direction, what is the direction of the electric field
Calculate the angular momentum of a solid uniform sphere with a radius of 0.135 m and a mass of 14.0 kg if it is rotating at 5.90 m about an axis through its center
how much time in seconds will it take the officer. A 63 resistor is connected in parallel with a 115.0 resistor. This parallel group is connected in series with a 19 resistor. The total combination is connected across a 15.0 V battery. Find the cur..
An inductor of 493 mh with a resistance o44 ohms is connected to a power supply with a maximum voltage of 264V and a frequency of 53 Hz. Find the power loss in the inductor
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