Physics

Heat pumps move heat from __________ to __________ areas & REQUIRES energy. *A. cold, hotB. hot, coldWhat is the electrical power when the current is 20 amps and the voltage is 15 volts? *A. 35 wattsB. 1.33 wattsC. 300 wattsWork is a transfer of matter. *A. TrueB. False
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A particle with charge q = +1e and mass m = 5.510^-26 kg is injected horizontally with speed 2.410^6 m/s into the region between two parallel horizontal plates. The plates are 22 cm long and 1.2 cm apart. The particle is injected midway between the top and bottom plates. The top plate is negatively charged and the bottom plate is positively charged, so that there is an upward-directed electric field between the plates, of magnitude E = 33 kN/C. Ignore the weight of the particle.(a) How long, in seconds, does it take for the particle to pass through the region between the plates? (b) When the particle exits the region between the plates, what will be the magnitude of its vertical displacement from its entry height, in millimeters?
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The motion of a set of particles moving along the x-axis is governed by the differential equation dx dt = t 3 - x3, where x1t2 denotes the position at time t of the particle. (a) If a particle is located at x = 1 when t = 2, what is its velocity at this time? (b) Show that the acceleration of a particle is
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Choose the best definition for velocity1. How fast something is going2. Speed in a certain direction3. Which direction something is going4. Something speeding up
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A speaker system is plugged into a 100v socket and 2.5 a of current runs through. Find the power of the system
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What can happen if the excretory system doesn't work properly ?
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In a shipping company distribution center, an open cart of mass 50 kg is rolling to the left at a speed of 5 m/s. You can ignore friction between the cart and the floor. A 15 kg package slides down a chute that makes an angle of 27 degrees below the horizontal. The package leaves the chute with a speed of 3 m/s, and lands in the cart after falling for 0.75 seconds. The package comes to a stop in the cart after 4 seconds. What is:a) the speed of the package just before it lands in the cart
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If A = (6i-8j) units, B = (-8i-3j) units, and C = (26i-19j) units, determine a and bsuch that aA + bB + C = 0
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Which angle is the angle of refraction? 1 2 3
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What happens to the brightness of the lightbulb when its resistance is increased? *
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A car speeds up from 18.54 m/s to29.52 m/s in 13.84 s.The acceleration of the car is:
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In a science experiment showing the splitting of water into Oxygen and hydrogen, two inverted test tubes of water were placed over the site of the reaction. (see the pic) How can you tell which one was catching the oxygen and which one was catching the hydrogen? Question 4 options: The hydrogen is a positive ion and will be located close to the negative terminal of the battery. The oxygen is a negative ion which will be located next to the negative terminal of the battery. There are 2 hydrogen atoms for every oxygen atom. The hydrogen will take up more space and is pushing the water lower in the test tube. The hydrogen, being a smaller atom, will take up less space than the oxygen. It will push the water down less.
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You would like to know whether silicon will float in mercury and you know that can determine this based on their densities. Unfortunately, you have the density of mercury in units of kilogram-meter^3 and the density of silicon in other units: 2.33 gram-centimeter^3. You decide to convert the density of silicon into units of kilogram-meter^3 to perform the comparison. By which combination of conversion factors will you multiply 2.33 gram-centimeter^3 to perform the unit conversion?
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What does the term retroperitoneal mean in the terms of the location of the kidneys ?
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Which of the following is a homogenous mixture?
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Which happens during the day at the beach? A. The water is warmer than the land, and air sinks over the waterB. The water is cooler than the land, and air sinks over the waterC. The water is warmer than the land, and air rises over the waterD. The water is cooler than the land, and air rises over the water
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Consider a disk, having mass and radius , that spins rapidly about an axle at its center, spinning with an angular velocity . The disk's axle is connected by a thin, massless rod of length to a central pivot. The end of the massless rod is fixed in place at that pivot, but it can freely rotate in all directions. 1) If the disk's mass and radius were each doubled, while keeping the other quantities (, , and ) fixed, by what factor would the rate of precession change? I.e., what is ?
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A Physics question regarding circuits and electricity.
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Please I need help!!! ASAP!!!Do waves transfer matter?
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What is the resistance of a 6.0 m long gold wire (gold = 5.6 x 10 -8 -m) whose cross-sectional area is 5x10 -7m 2 ? (Please show some work)
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4 newtons, 4 amps, 4 joules, 4 watts, 4 ohms, 4 voltswhat does I=
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Find the acceleration of a car with the mass of 1,200 kg and a force of11 x 103 N.a9.2 m/s2b 5 m/s2c 2 m/sd 10 m/s2
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The orbital radius of the Earth (from Earth to Sun) is 1.496 x 10^11 m.Mercury's orbital radius is 5.79 x 10^10 m and Pluto's is 5.91 x 10^12 m.Calculate the time required for light to travel from the Sun to each of thethree planets. a. Sun-Earth:_______b. Sun-Mercury:________c. Sun-Pluto:________
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Define force in your own words.
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