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Montgomery
Physics
You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to an immediate stop. The force acting on you that causes you to fall forward is A) the normal force due to your contact with the floor of the bus. B) the force due to static friction between you and the floor of the bus. C) the force of gravity. D) the force due to kinetic friction between you and the floor of the bus. E) No forces were acting on you to cause you to fall.
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Kaelyn
Physics
Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?
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Macdonald
Physics
If dot C moves to position 5 (60 meters), what is its average velocity during these 5 seconds? A) 10 m/s B) 11 m/s C) 12 m/s D) 13 m/s
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Brayan Lucero
Physics
A set is any collection of objects. true or false.
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Lilibeth
Physics
An ambulance is speeding towards you at 20 m/s. If the siren is producing a sound at a frequency of 737 Hz, what is the frequency you hear? (The speed of sound is 343 m/s).
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Madelyn Christensen
Physics
Three professional wrestlers are fighting over a champion's belt, and each exerts a force on the belt. Wrestler 1 exerts a force F1 = 40.0 N in the + x-direction, wrestler 2 exerts a force F2 = 80.0 N in the - y-direction, and wrestler 3 exerts a force F3 = 60.0 N at an angle of 36.9∘ counterclockwise from the + x-direction. Find the x - and y-components of the net external force F⃗ on the belt.
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Deborah Doyle
Physics
The specific heat of water is 4.19 x 103 J/kg°C. How much energy will it take to raise the temperature of 0.5 kg of water by 2 degrees?
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Guest
Physics
Me kitten runs 40 meters in 8 seconds what is his speed?
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Clay Hamilton
Physics
You climb to the top of a tall water tower and drop a water balloon. As it drops, the balloon is experiencing energy changes. What are those energy changes?
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Julian Mcgee
Physics
Heat that is transferred by the movement of currents within a fluid is called?
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Andres Galloway
Physics
5. What is the percent composition of sulfur in H2SO4?
A. 32.7%
B. 65.2%
C. 98.1%
D. 2.1%
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Katelynn Kane
Physics
A 0.8kg object accelerate at a rate of4 m/s2. What is the net force acting on a object
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Emmett Trujillo
Physics
Which of the following is the best definition of an isotope?
A. elements of the same kind with different numbers of neutrons
B. elements of the same kind that have lost electrons
C.
elements of the same kind that have different electrical charges
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Raphael Ferguson
Physics
Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the velocity of the first car relative to (in the frame of reference of) the second car? answer in units of km/h.
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Shayna Bowers
Physics
What usually causes high concentration of minerals to form
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