Physics

In terms of activation energy, why does increasing the temperature of a reaction make it proceed more quickly? A. Increasing the temperature increases how many reactant molecules reach activation energy. B. Increasing the temperature reduces the activation energy C. Increasing the temperature increases the potential energy of the reactants D. Increasing the temperature makes the molecules move slower.
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What is the velocity of a wave that has a frequency of 200 Hz and awavelength of 0.5m?
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When a rocket is 4 kilometers high, it is moving vertically upward at a speed of 400 kilometers per hour. At that instant, how fast is the angle of elevation of the rocket increasing, as seen by an observer on the ground 5 kilometers from the launching pad
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A 24 kg object, initially moving at 20 m/s, is slowed by an applied force of 20 N to a final velocity of 16 m/s. How much time did this take?
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The results from Rutherford's alpha particle scattering experiment led tothe nuclear model. Alpha particles were fired at a thin film of gold at aspeed of 7% of the speed of light. Determine the speed of the alphaparticles. Speed of light = 300,000,000 m/s
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Why is the Greenland ice sheet so important to understanding earths past climate?
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When you are driving on the freeway and following the car in front of you, how close is too close? Let's do an estimation. 1. Pick a car model (preferably the one you drive, but can also be any car of your dream), and find its stopping distance at highway speeds (you can usually find this type of data online). 2. Assuming that the car in front of you suddenly does a hard brake. For simplicity, assume that its braking performance is about the same as yours. Then also assume a reasonable amount of reaction time on your part (the time delay between seeing the brake lights lit up and applying your own brake). In order for you not to run into the car your are following, what's the closest distance you need to keep between the two cars? 3. Redo the same calculation if the vehicle in front of you is a typical big-rig truck. Find its braking data online. 4. There is a rule of thumb which says that you must stay one car length behind the car in front of you for every 10 mi/h of driving speed. From your calculation, does this rule make sense?
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What is the equation used to find the image distance? Identify each variable
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What is The first stage in cellular respiration, what cycle?
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For an object falling at the terminal velocity, list all the forces (magnitude and direction) acting it?
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Why are dominant alleles always shown as capital letters?
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Explain the melting of a solid in terms of molecules and energy
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Compare and contrast Albert Einstein and Karl Popper regarding their views on the nature and philosophy of science. Use the key concepts of each to explain their views. Consider how they begin their accounts, the arguments they make to support their views, and their key conclusions.
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A student plans to determine the resistivity of a specific type of metal. To do this, the student will use wires constructed of the metal with known dimensions that are connected to a variable power source. The potential difference across and the current through each wire are measured and the resistance of each is calculated. The resistance is used to determine the resistivity. Which of the following should be kept constant to ensure that the resistivity values are consistent, and why?a. The potential difference across the wires, because then only the currents will be different. b. The currents in the wires, because then only the resistances will be different. c. The lengths of the wires, because the resistivity changes with length. d. The temperature of the wires, because resistivity changes with temperature.
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How does the amplitude of the wave change as you get farther from the speaker?
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One day, Pinki was ironing the clothes in her room. After half an hour of ironing, the light went off and Pinki went outside to the lobby of her house to check it there was any problem in the household circuit. At the same time, she listened the voice of her 4 years old daughter from the same room where she was ironing the clothes. Her daughter was about to touch the hot electric iron but at the same moment, Pinki entered in the room and pushed her daughter back from that place.(a) On which effect of electric current, does the electric iron works?(b)State the effect of electric current described here.(c) Mention the values showed by Pinki here. PLEASE ANSWER ASAP
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A van of mass 2500kg travelling at a velocity of 12 m/s collides with a stationary car of mass 700kg. The vehicles move together after the impact. Calculate their velocity.
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how much hp does that fastest car in the world have
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Another example of an object that has pressure energy
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name one material through which continuous flow of charge can be produced from heat energy
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How do you label a bar graph of work compared with power?
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Help please, i am lost.
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We use the system to determine noise levelNewtonianCartesianDecibelFujita Scale
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PLEASE HELP AM I CORRECT??!!
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