Ultimate Physics Study Guide - Questions & Answers

Which of Hubbles findings supported the big bang theory?
2 Answers
What units are used to measure the magnitude of a vector?-Grams-Newtons-Liters-Pounds
1 Answer
Knowing that a ball traveled 16 feet in one second, how much will it travel in the first quarter second?
2 Answers
PLEASE HURRY! The highest speed ever achieved on a bicycle was reached by John Howard of the UnitedStates. The bicycle, which was accelerated by being towed by a vehicle, reached a velocityof 6.81 m/s. Suppose Howard wants to slow down, and applies the brakes on his now freelymoving bicycle. If the average acceleration of the bicycle during braking is -3.0 m/s2, howlong will it take for the bicycles velocity to decrease to 5.44 m/s?
2 Answers
Which of the following statements are true? Check all that apply. Atoms with the same atomic number have the same number of electrons Atoms with the same atomic number have the same number of neutrons Atoms with the same atomic number can have different numbers of electrons Atoms with the same number can have different numbers of neutrons
2 Answers
What contributes to the better resolution of the Hubble telescope.
2 Answers
A student releases a marble from the top of a 130cm ramp. The marble increases speed steadily and reaches the bottom of the ramp with a speed of 140cm/s. Determine all unknowns and answer the following question.How long did the marble take to reach the bottom of the ramp?PLZ HELP ASAP
1 Answer
Solve for velocity in A car has traveled 456 meters in 45 seconds while driving east on Broad Street. What is the velocity of the car?
1 Answer
The sound wave has a frequency of 426 Hz. What is the period? What is the wavelength?
1 Answer
4What is the mass of 29.7 moles of chromium atoms? Round your answer to the nearest hundredth. Be sure to include units.
2 Answers
(Before I ask my question, it's not physics btw idk what it is it's just science)Since kinetic energy depends on mass and speed, will a 300-pound baseball player hit the ball farther than a 100-pound baseball player? EXPLAINAssume the following conditions in this scenario:1. The bat is identical in mass and weight for both players2. both players swing the bat with the same velocity3. The weather conditions are identical for both players (wind, climate etc..)4. both players meet the ball squarly so as to hit the ball in the same place for the best outcome
1 Answer
Suppose 128 radioactive atoms have a half-life of 15 seconds. Approximately how many radioactive atoms will be left after 60 seconds?A. 32B. 16C.8D. None
1 Answer
4. Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams. Hemeasures a half-life of 232 seconds. The second scientist has a sample of the same substance with a mass of 80 grams. What is the half-life that she is most likelyto measure?A. 58 secondsB.232 secondsC.464 secondsD. 928 seconds
2 Answers
Hey can you plz help meLeo makes an electrical circuit using a battery, copper connection wires and alamp.1 Diagram the assembly and say if the lamp lights up.2 Specify the direction of movement of the free electrons.3 Leo reverses the connections to the battery terminals. In which direction do thefree electrons
1 Answer
when an object is charged by contact, what kind of charge does the object have compared with the charge on the on the object giving the charge?
1 Answer
What is the magnitude? PLSSS HELP (15 POINTS)!!
1 Answer
Plz solve this question..
1 Answer
Hey!Can someone solve my question??
2 Answers
how do the dancer move while dancing
2 Answers
Which of the following is NOT a benefit of cool down activities?A.reduced muscle sorenessB.maximal lightheadednessC.injury preventionD.gradually reduced heart ratePlease select the best answer from the choices provided.ABCD
2 Answers
5. How will you separate water from petrol?
2 Answers
Why salt is a pure substance and salt solution is considered to be a mixture
2 Answers
List Three units commonly used to measure volume
1 Answer
Two ants at a picnic find a small piece of cake. Each picks up the cake and tries to carry ithome. The first ant's home is due west and he pulls with a force of 10 N. The second ant'shome is due south and he pulls with a force of 10 N. In what direction is the cake heading?If the cake can withstand a force of 13.5 N, what do you predict will happen?
1 Answer