Master Physics with Fun Quizzes & Brain Teasers!

=1) If X = 3.16 +0.02 cm and Y = 2.86 + 0.01 cm then X - Y =a) 0.30 + 0.03 cmb) 0.30 + 0.01 cmc) 0.30 + 0.02 cmd) 0.300 + 0.003 cm
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please answer these, id really appreciate it
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can anyone help me with this , thank you
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gap region between the diver's skin and herwetsuit, forming a water layer about 0.5 mm thick.Assume that the total surface area of the wetsuitcovering the diver is about 1.0 m, and that thewater enters the suit at 10 C and is warmed bythe diver to skin temperature of 35C. The specificheat of water is 1.00 kcal/kg - C.Estimate how much energy (inunits of candy bars = 300 kcal)is required by this heatingprocess.Express your answer usingtwo significant figures.
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A car, starting from rest, accelerates at4.0 m/sec2. What is its velocity at the end of8.0 seconds?
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List between six and eight student organizations either offered by your school or offeredat other schools. Use online research if necessary. Explain how these organizationsencourage growth and what you can learn from being involved in them. Discuss theskills you can learn from certain organizations, and other benefits of being involved.
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Questions 1: The diagram below shows two 8-ohm resistors connected to a 12 volt battery. Anammeter (A) measures the current in the circuit.8.0 32 8.0 32mw12-voltsourceA1. What is the equivalent resistance of the circuit?A. O ohmsB. 16 ohmsC. 8 ohmsD. 4 ohmsJustification:
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PLEASE HELP QUICKLY!!Which of the following statements, about projectile motion is false.Select one:O a. How fast an object falls depends on its mass.O b. The range of a projectile depends on the angle at which the projectile is fired.O c.The horizontal component of the acceleration is zeroO d. The acceleration due to gravity always acts downwards.O e. The velocity in the x and y directions can be treated independently
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Lab: Waves and DiffractionAssignment: Lab ReportAnyone have this completed
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3. Which resistor experiences a larger voltage drop across it?A. The 10 ohm resistorB. The 5 ohm resistorC. Neither, both have the same voltage acrossD. Unable to be determinedJustification:
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Question 434. A 12-ohm resistor is connected to a voltage battery. If the voltage provided by the battery isdoubled, the current through the resistor isA. doubledB. halvedC. quadrupledD. unchangedJustification:
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5. The total current through the circuit isA. Greater than 6.0 AB. Less than 6.0 AC. Equal to 6.0 AD. The current cannot be determined.Justification:6. What is the power dissipated across R2?A. 144 WattsB. 4 WattsC. Less than 1 WattD. Cannot be determined.Justification:
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Question 7: The circuit below consists of two 20 resistors connected in parallel to a 30 Vbattery.3.0 AA30. V20. 20.227. What would be the effect of adding a third 20 resistor in parallel?A. The total current would remain the sameB. Whether the total current would increase, decrease, or remain the same cannot bedetermined.C. The total current would increaseD. The total current would decreaseJustification:
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A man gets mad at his messed up computer and tosses it out of a 50 m high window. What is the velocity of the computer as it hits the ground?
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a bomb is released by a plane flying horizontal and other one is released by a stationary plane like helicopter at the same altitude and they reach the ground at the same time why?
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A 2.1W ipod is used for 30 minutes. How much energy does it store
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a balance in an organism's access to the resources it need may make its life.............
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Three masses are connected via light strings and an ideal pulley, as shown below. Mass m2 is twice as massive as m1; m3 is three times as massive as m1. Everything is initially at rest, but then m3 is released, and it falls 1.30m to the floor. If the speed of m3 just before it hits the floor is 3 m/s, what is the coefficient of kinetic friction between the table and the blocks? (Hint: Use an energy analysis)
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physics teacher guide grade 9
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energy in a food chain flows in ____________
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During a snowball fight two balls with masses of 0.4 and 0.6 kg,respectively,are thrown in such a manner that they meet head-on
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What is TRUE about clinical psychology? Pls help Im timed !
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as the temperature of the water increase, the concentration of dissolved oxygen
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energy in a food chain flows in __________.
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