Master Physics with Fun Quizzes & Brain Teasers!

Give an example of each element,compound, and mixture
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The muscle cells of an elephant Zontain 62 chromosomes. How manychromosomes are in an elephant egg cell?
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An object is released from rest at a height H near and above the surface of Earth. As the object falls toward the surface, Earths atmosphere exerts a resistive force on the object such that it reaches a terminal velocity before it reaches the ground. Which of the following claims is true? Select two answers.The system consisting of only the object is an open system.The system consisting of only the object is an open system.AEarths atmosphere does negative work on the object as it falls toward the surface.Earths atmosphere does negative work on the object as it falls toward the surface.BThe change in the objects kinetic energy from the instant it is released from rest, to the instant it reaches terminal velocity, is zero.The change in the objects kinetic energy from the instant it is released from rest, to the instant it reaches terminal velocity, is zero.CThe total mechanical energy of the object-Earth system remains constant at all times in which the object is in motion.
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A plane flew at a speed of 600 km/hr for a distance of 1500 km,How long did take to get to its destination
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a manor house was most similar to
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Select ALL of the places you might find DNA evidence.saliva on gumblood spatter on the wallinside a femur bone found in the woodscells on root of hair found at the scene
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Which of these statements is FALSE?*If you find someone's DNA at a crime scene, they are guilty without a doubtEven identical Twins have different DNA FingerprintsDNA is individual evidenceWhen DNA is found, it will not always lead to usable DNA Fingerprint evidence
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Each spring, a crevice in the cliff wall widens and deepens. What is the best explanation for how physical weathering causes the crevice to widen and deepen?Winds deposit sand into the crevice.Water freezes and expands in the crevice.Snow melts and evaporates between the rocks in the crevice.Air pollution in the area causes a reaction that widens the crevice.
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True or False do Eclipses, tides, season, and moon phases ALL have to do with the positions of the Earth, Sun, and Mars.
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Two point charges have a total electric potential energy of -24 J, and are separated by 29 cm.If the total charge of the two charges is 45 C, what is the charge, in C, on the positive one? What is the charge, in C, on the negative one?
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ASAP 1-5 question plzz helppp, mark Brainliest if you answer all 5 questions
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2) Given R = 3 ohms and R, = 1 ohm and V = 12 voltsIa) Find the total resistance.b) Find the current in the circuit:c) Find the voltage drop in each resistor:
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Which are examples of a Simple machine?Question 4 options:Hammer that swings on a nailLight Switch that flips Door stop that wedges at the bottomThe wheels on a bike
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calculate the magnitude and the direction of the resultant forces
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How high did a worker lift a 25 kg bag of sand if it now has 2940 of gravitational potential energy
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A friend tells you that objects with more mass fall faster because theyhave a stronger gravitational pull to Earth. How can you show your friendthat this is not true?
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Explain whether the acceleration of the moon is higher than,less or equal to that on the earth
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Q1. A man wants to install a surveillance mirror in his shop, which mirror should he use?(1)a) Convex mirrorb) Concave mirrorc) Plane mirrord) Both (a) and (b)
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An aluminium bar 600mm long1 with diameter 40mm, has a hole drilled in the centre of the bar. The hole is 30mm in diameter and is 100mm long. If the modulus of elasticity for the aluminium is 85GN/M^2 Calculate the total contraction on the bar due to a compressive load of 180KN
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Capacitors C1 = 5.85 F and C2 = 2.80 F are charged as a parallel combination across a 250 V battery. The capacitors are disconnected from the battery and from each other. They are then connected positive plate to negative plate and negative plate to positive plate. Calculate the resulting charge on each capacitor.
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Which metal is used in thermometers?
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luggage handler pulls a 20.0 kg suitcase up a ramp inclined at 34.0 above the horizontal by a force F of magnitude 165 N that acts parallel to the ramp. The coefficient of kinetic friction between the ramp and the incline is k = 0.300. The suitcase travels 3.90 m along the ramp. Part A Calculate the work done on the suitcase by F . Express your answer with the appropriate units. WF = nothing nothing Request Answer Part B Calculate the work done on the suitcase by the gravitational force. Express your answer with the appropriate units. Ww = nothing nothing
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A shell (a large bullet) is shot with an initial speed of 20 m/s, 60 degrees above the horizontal. At the top of the trajectory, the bullet explodes into two fragments of equal mass. One fragment has a speed of zero just after the explosion and simply drops straight down. How far from the gun does the other fragment land, assuming that the ground is level and that the air drag is negligible.
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Calculate the amount of kinetic energy the car stores if it has a mass of 1200 kg and speed of 15 m/s
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