after running a dc operating point analysis in ltspice, if the current through a resistor shows up as negative, what do you do in order to have the current show up as positive?
if it starts 4.00 m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 17.0 n ?
a famous opera singer hits a high pitched note, with large amplitude. a glass placed near heart starts to vibrate, and then shatters as she holds the not. this is an example of
a 3.0 m long rigid beam with a mass of 130 kg is supported at each end. an 90 kg student stands 2.0 m from support 1. how much upward force does each support exert on the beam?
a switch that connects a battery to a 10 mf capacitor is closed. several seconds later you find that the capacitor plates are charged to {30 mc. what is the emf of the battery?
what electronic property of semiconductors and insulators determines how much energy they can absorb from a photon?
Suppose a child swings around her straight arm about her shoulder joint at an angular velocity of 13 rad/s. If her arm is 40. 0 cm long, what is the speed of her hand?.
A boat is 4. 0 meters long and 2. 0 meters wide. Its water line is 1. 0 meter from the bottom of the boat; it is submerged to this water line. What is the mass of the boat?.
When you whirl a can at the end of a string in a circular path, what is the direction of the force you exert on the can?.
At what frequency should a 200-turn, flat coil of cross sectional area of 300. 0 cm2 be rotated in a uniform 30. 0-mt magnetic field to have a maximum value of the induced emf equal to 8. 0 v?.
A __ is an instrument used in the photosynthesis lab which contains a prism and displays the total visible spectrum when a light source is passed through the light slit.
A baseball is thrown upward with an initial speed. What is the force on the ball when it reaches half of its maximum height? What is the force on the ball when it reaches its peak? Disregard friction
Short Constructed Response: A projectile is shot horizontally off a cliff at a speed of 30 m/s, hitting the ground 2 seconds later. Refer to the information and diagram above. Please show your work (which equation you are using and how you are using it). Part A - At what horizontal distance from the cliff did the projectile travel? (Show your work for full credit.) Part B - What is the height of the cliff? (Show your work for full credit.)
