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Physics
Physics
College
A 849-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it reaches a speed of 35.0 m/s. What is the average force exerted on the car during this time
Physics
High School
a box is pushed along the ground with a force of 20N. If the box is pushed 0.5M.How much work done is on it?
Physics
High School
How do Newton's and Kepler's laws apply to galaxies(or galaxy collisions)?
Physics
High School
If an object starts accelerating from rest at a rate of 35 m/s2, then how far does it travel during the first second?
Physics
High School
Fill in the blanks to complete the statements.A paper plane moving through the air experiences air _____ . Frictional forces acting on an object are often converted into ______ energy, which causes the temperature of the object to rise slightly.
Physics
High School
Given a helicopter flying up and sideways at a velocity of 95 m/s at an angle of 35 to the ground, find the horizontal component of the velocity.
Physics
High School
A football is spiraling downward toward a football player.
Physics
High School
During a spacewalk, an astronaut lets go of a tool, causing it to float away and bounce off the side of the space shuttle. The astronaut saw the the tool hit the shuttle but did not hear it hit the shuttle. Why would the astronaut be able to see the tool hit the shuttle but not hear it hit the shuttle? A. Neither sound waves nor light waves can travel through a vacuum. B. Sound waves can not travel through a vacuum but light waves can. C. Both sound waves and light waves can travel through a vacuum. D. Light waves can not travel through a vacuum but sound waves can.
Physics
High School
Which of the following is a solution?OA.ocean waterOB. oil in waterOC. sand in waterOD. all of theseOA. Ocean water
Physics
High School
How does a simple machine facilitate our work
Physics
High School
What type of System interact with its environment
Physics
College
A crane uses a single cable to lower a steel girder into place. The girder moves with constant speed. The cable tension does work WT and gravity does work WG. Which statement is true
Physics
College
What resistance must be connected in parallel with a 633- resistor to produce an equivalent resistance of 205 ?
Physics
College
Determine the Northward and the Eastward components of a 75 m long displacement vector which points in a direction of 27^o E of N.
Physics
High School
QuestionWhat is the unit of wavelength?AhertzB.metremetre per secondDsecondBD
Physics
Middle School
A 20 kg box is being pulled across a floor by a horizontal rope. The tension in the rope is 99 Newtons. The coefficient of friction is 0.25. What is the force of friction on the box? What is the acceleration of the box?
Physics
High School
12. Describe Binding energy and how it plays a role in nuclear fusion up to 56Fe (the synthesis of ironnuclei). Include a description of the relationship between the strong nuclear force, theelectromagnetic force, and the number of nucleons involved in the fusion in your answer.Help me on thiss one once again ughh ! asap ! hurry
Physics
High School
some male coworkers of suzanne are bullying her because she is a woman . which type of hazard is this ?
Physics
College
Design a tension member and slip-critical splice to carry a factored load of 500 kips. Please use a wide-flange section for the tension member. Please use A572 Gr. 50 steel plates for the splice plates. Please use Group B, A490 bolts for the splice connection. The splice connection should be slip-critical, and have adequate strength after slip occurs as well. Please make any other assumptions you need in order to complete the problem. Provide detailed sketches and drawings for your design.
Physics
High School
Five mL of ethanol has a mass of 3.9 g, and 5.0 mL of benzene has a mass of 44 g. Which liquid is denser?
Physics
Middle School
PLS HURRY! `WILL GIVE BRAINLIEST TO FIRST ANSWERWhich factor can decrease the kinetic energy of an object? (3 points) Increase in speed Decrease in speed Increase in temperature Decrease in volume
Physics
College
Super Mario and Bowser Jr. are racing around a track when Baby Bowser launches a green shell at Mario, bringing him to rest. Bowser Jr. then passes Mario at his top speed of 30 blocks/h, moving down the track in a straight line. Mario quickly accelerates and reaches his top speed of 40 blocks/h in order to catch back up and pass Bowser Jr., but by this point he has opened up a 75 block head start down the track. Mario world measure distance using the units of blocks, with 1 block = 0.47 m.a) What are Mario and Bowser Jr.'s speeds in m/s?Assuming both Mario and Bowser Jr. race to the finish in a straight line at their top speeds,b) How long does it take for Mario to catch Bowser Jr.?c) How far down the track is Mario from the point at which he reaches his top speed?
Physics
College
A cannonball is fired horizontally from a 10 m high cliff at 20 m/s. How long will the cannonball be in the air? How far away will the cannonball strike the ground?
Physics
College
Calculate the ratio of the mechanical energy at B and mechanical energy at a (eb,ea) and (ec,ea). What do these ratios tell you about the conservation of energy? A) is the mechanical conserved between a and b? explain B) is the mechanical energy conserved between b and c ?explain
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