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Physics

As the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor:_______. a. approaches zero. b. approaches infinity. c. approaches unity. d. none of the above.

Two straight wires carry currents perpendicular to the xy-plane. One carries a 50 A current and passes through the point (5.0 cm, 0) on the x-axis. The other carries an 80 A current and passes through the point (0, 4.0 cm) on the y-axis. What is the magnitude of the resultant magnetic field at the origin?

A volleyball is released three times from three different heights: 5 m, 10 m, and 20 m. Which statement is correct about the volleyball? The volleyball accelerates more quickly toward the ground when released from a higher height. The volleyball accelerates the same amount toward the ground each time. The volleyball accelerates more slowly toward the ground when released from a higher height. The volleyball may accelerate more quickly or slowly depending on its mass. A student is setting up an experiment with 10 different balls. The student wants to measure which ball hits the ground with the largest force when released from a box 5 feet above the ground. Which quantity should be measured to correctly calculate the force with which each ball hits the ground? the initial velocity of each ball the mass of each ball the rate at which the velocity of each ball increases the final velocity of each ball right before hitting the ground

The table below shows the mass and volume of four objects: Object | Mass (g) | Volume (cm³) -------|----------|------------- Aluminum figure | 230 | 85 Lead weight | 800 | 70 Steel block | 200 | 25 Wood puzzle | 400 | 500 (i) Which object is the heaviest? Your answer: The lead weight is the heaviest.

You and your family are going on a trip in Europe. Calculate the speed in the following scenario. State how you calculated your answer and include correct units. A car travels 240 kilometers in 3 hours; What is the speed of the car during that time?

briefly discuss the phenomenon of childhood maltreatment in the context of five different psychological perspectives

if force of 5 .newton is applied oven an area of 5cm².calculate the pressure produced​

A hollow conductor carries a net charge of ++3QQ. A small charge of −−2QQ is placed inside the cavity in such a way that it is isolated from the conductor. How much charge is on the outer surface of the conductor?

A flea jumps straight up to a maximum height of 0.500 m . What is its initial velocity v0 as it leaves the ground? Express your answer in meters per second to three significant figures.

What is the speed of an object that travels 20 meters in 4 seconds?

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