Master Physics with Fun Quizzes & Brain Teasers!

Imagine you are dating a mineral sample that contains one-eighth of its original parent isotope. What is theabsolute age of the sample if the half-life of the parent isotope is 15 years?A. 1.875 yearsB. 23 yearsC. 45 yearsD. 120 years
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TemperatureEnergy InputThe three states of matter are modeled in the heatind cucurve seen here. Identify ALL of the changes that must take place for asubstance to change state, from a solid to a gas.A)Pressure increasesB)Temperature increases197Particles spread apartD)Kinetic energy increasesE)Particle motion increases
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A 50Kg girl jumps off a 5-meter-high diving board. What is her kinetic energy right before shehits the water?A. 0 JB. 25 JC. 1225 JD. 2450 J
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When does air become turbulent around a thrown ball? A:On the smooth side of a ballB:On the rough side of a ballC:On the right side of a ballWill give brainliest
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Which has a greater momentum and greater kinetic energy-a truck witha mass of 3530 kg moving at a speed of 21 m/s or a car with a mass of1620 kg moving at a speed of 54 m/s? Answers below are given in theform: greater momentum, greater kinetic energy.
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Which image illustrates the bouncing of a light wave off of a surface?ABDA. AB. BC. C
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A guitar string is plucked. What best describes the formation and transmission of the sound wave?The string vibrates the surrounding air, which produces a transverse wave.The string vibrates the surrounding air, which produces a longitudinal wave.The string produces a longitudinal wave that travels without a medium.The string produces a transverse wave that travels without a medium.
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Question 3 of 10Which point on the standing wave is the result of the constructiveinterference of two crests?BDA. AO O oB. BC. CD. D
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please help Which is a result of using a machine?The amount of work that is done is increased.The work input is less than the work output.Both the force and the distance through which it acts increase.The distance through which a force acts increases, and the force decreases.
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b. What would the momentum be if the mass of the bowling ball were doubled and its velocity still was 3 m/s?
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Which event may occur when ocean salinity increases?mass of water increasesfreezing point of water increasessunlight in deeper locations decreasesamount of dissolved gases in water increases
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Why are models of atoms and molecules useful explain
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A safety plug is designed to melt when the pressure inside a metal tank becomes too high. A gasat 51.0 atm and a temperature of 23.0C is contained in the tank, but the plug melts when thepressure reaches 75.0 atm. What temperature did the gas reach?
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Please help me this is worth allot
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An artificial satellite orbits Earth at a speed of 7800 m/s and a height of 200 km above Earths surface. The satellite experiences an acceleration due to gravity of A39 m/s2 Bless than 39 m/s2 but greater than 9.8 m/s2 C9.8 m/s2 Dless than 9.8 m/s2 but greater than zero
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When balancing a chemical equation, can a coefficient within a chemical equation be adjusted tobalance the chemical equation?
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A bottle rocket is fired off and has an acceleration of 14.5 m/s2 for the 2.25s until it burns out. If it starts at rest, what distance does it cover?
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3 conditions that may berequired for a chemical reaction to occur.
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A 5.00 kg crate is on a 21.0 hill.Using X-Y axes tilted down theplane, what is the y-componentof the weight?(Unit = N)
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aluminum has a density of 270 kg/m3. what volume of aluminum would have a mass of 49.9 kg?(unit = m^3)
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PLS HELP ME!A motorist is traveling 40ms- and applies brakes and slow down at a rate of 2ms- the available distance for the the motorist to stop is 400m will the motorist be able to stop?
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Chocolate milk contains more than one type of component. Therefore, it 1 pointis not a(n)substance
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Cecily is inflating her bicycle tyre with the pump below. When she pushes the plunger down, it is doing work against the gas. This means that the plunger is transferring what to the gas particles?
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A car of weight 6,400 N has four wheels. Each wheel has an area of80 cm-touching the road. Find the pressure the car puts on theground. I
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