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Jonathon Mahoney
Physics
If a car changes its velocity from 32 km/hr to 54 km/hr in 8.0 seconds, what is its acceleration?
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Natalia Wood
Physics
Explain why meteorologists compare new weather maps and weather maps that are 24 hours old
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Ross Nichols
Physics
Describe the uses of compound pulleys
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Guest
Physics
Why do cities on the East Coast have warmer climates than cities on the West Coast at similar latitudes?
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Nicole Bender
Physics
What energy transformations take place when you eat a taco and then go for a jog
around the neighborhood?
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Declan Wade
Physics
What is the kinetic energy of a 1.40 kg discus with a speed of 22.5 m/s?
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Jayden Barker
Physics
A + B → C + D
If there are 4 grams of product produced by the chemical reaction, how many grams of reactant were consumed?
A) 0 grams
B) 1 gram
C) 2 grams
D) 4 grams
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Octavio Suarez
Physics
To practice Problem-Solving Strategy 21.1 Conservation of energy in charge interactions. An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an electric field. The particle then begins to move. Find the speed of the alpha particle after it has moved through a potential difference of - 3.45*10-3 V. The charge and the mass of an alpha particle are qα = 3.20*10-19 C and mα = 6.68*10-27 kg, respectively.
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Wendy Rivers
Physics
How do the sclera and the cornea compare? The sclera is the inside layer at the back of the eyeball, and the cornea is on the outside of the eyeball. The sclera focuses light that enters the eye, and the cornea controls how much light enters the eye. The sclera does not allow light to enter the eyeball, and the cornea allows light to enter the eyeball. The sclera is the outer surface of the eyeball, and the cornea fills the inside of the eyeball.
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Cierra Riddle
Physics
Give the abbreviation for the unit which is equivalent to (kgm) / s2.
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Guest
Physics
Which of these would be best explained by the Doppler effect? A) the change in frequency as you shorten a guitar string. B) the change in pitch heard as an ambulance approaches you. C) the change in volume as a train pulls away from the station. D) the change in seed of a sound wave as it travels from air into water.
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Finley Mack
Physics
What is the weight on earth of a girl with a mass of 38 kg?
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Leonel
Physics
50g of ice at 0°C is mixed with 50g of water at 80°C, what will be the final temperature of a mixture in
degrees C?
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Kyra Booth
Physics
If the Density of an object is 5.2 g/cm3, and its volume is 3.7 cm3, what is its mass
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Jaylen Donaldson
Physics
The direction of the magnetic field is determined by which of the following? A. energy of the current B. magnetic domain C. magnetic force D. direction of the current
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