Physics

The basketball started at a height of about 4 feet above the ground. While dribbling the ball traveled downward until it hit the ground, then it returned to its initial height. What is the distance and what is the displacement?
1 Answer
A motor vehicle generates electrical power using an alternator, which employs electromagnetic induction to convert mechanical energy to electrical energy. The alternator acts as a dc generator (Example 29. 4 ). The alternator maintains and replenishes charge on the car's battery and operates headlights, radiator fans, windshield wipers, power windows, computer systems, sensors, sound systems, and other components. (a) A typical car battery provides 70 amp-hours of charge. How many coulombs is that
1 Answer
An Oceanic Plate is subducting on it's eastern side, what is the most likely boundary type on the western side of the plate?
1 Answer
It has been argued that power plants should make use of off-peak hours (such as late at night) to generate mechanical energy and store it until it is needed during peak load times, such as the middle of the day. one suggestion has been to store the energy in large flywheels spinning on nearly frictionless ball-bearings. consider a flywheel made of iron, with a density of 7800 kg/m3 , in the shape of a uniform disk with a thickness of 11.6 cm .part awhat would the diameter of such a disk need to be if it is to store an amount of kinetic energy of 13.7 mj when spinning at an angular velocity of 92.0 rpm about an axis perpendicular to the disk at its center?part bwhat would be the centripetal acceleration of a point on its rim when spinning at this rate?
1 Answer
what is scientific learning
1 Answer
A ball of mass 0.2kg travelling in the x direction at a speed of 0.5m/s collides with a ball of mass 0.3kg travelling in the y direction at a speed of 0.4m/s. the two balls stick together after the collision travelling at an tita to the x direction. what is the value of tita
1 Answer
Diode-fare semiconductor devices. Diodes only allow a current to pass in one direction in a circuit (forward direction). The potential difference (p. D. ) at which the diode will allow a current to pass in thecircuit is called the threshold p. D. Write a plan to find the threshold p. D. And its direction to enable a current to pass. Your plan should include the following details:a hypothesisselection and justification of equipment, techniques or standard procedureshealth and safety associated with the investigationmethods for data collection and analysis to test the hypothesis including:the quantities to be measuredthe number and range of measurements to be takenhow equipment may be usedcontrol variablesbrief method for data collection analysis.
1 Answer
A solution of ethanol is pumped to a vessel 25 m above a reference level through a 25-mm-inside-diameter steel pipe at a rate of 10 m3 /h. The length of pipe is 30 m and contains two elbows with friction equivalent to 20 diameters each. Compute the power requirements of the pump. Solution properties include density of 975 kg/m3 and viscosity of 4 3 1024 Pa s
1 Answer
(PLEASE HELP ME OUT). A student claims when they use their space heater and hairdryer at the same time, the power for the entire house goes out. A second student says that it is not possible for the use of those two items to affect the power to the entire house. Using your knowledge of circuitry and electricity, explain why it is unlikely that the power for the entire house would go out.
1 Answer
he difference between mass and weight. *
1 Answer
Jose does push-ups by applying a force to elevate his body 10 cm off the ground. he does 50 j of work. if jose does each push-up in two seconds, what is the power delivered?physical science. help please
1 Answer
3. Observe a residential street for a half hour, and keep a log of potential hazards that younotice (examples include children playing in the street or a vehicle backing out of adriveway). If you were driving at the time, what actions would you take to reduce the risk ofpotential hazards? Answer the question by naming at least five potential hazards and writingwould avoid three of them in at least three complete sentences
1 Answer
2. A girl on her bicycle rides in a direction opposite of her dad, who is driving away in his car at 33. 4 m/s. The girls speed is 8. 54 m/s as she rings the bell on her bike. If her dad hears a 714 Hz ringing sound, what is the frequency of the girls bell?
1 Answer
Identify how each machine changes the way work is done so as to be useful.
1 Answer
10. In a common type of mass spectrometer, a beam of ions is passed through a velocity sectorwith crossed electric and magnetic fields. What is the purpose of the velocity sector?O to block all ions except those with specific speedsto decrease the kinetic energy of the ionsO to prevent the ions from traveling in a circular pathO to strip loose electrons from the ions
1 Answer
3.What is sonography?using infrasonic waves to communicate long distancesthrough the groundusing ultrasonic waves to communicate and hunt for preyMacBook Airusing infrasonic waves to create images of submergedobjectsusing ultrasonic waves to create images of objects foundinside other objects
1 Answer
Using kinematic equations to derive a formular for the horizontal range of the projectile interms of its initial velocity and angle
1 Answer
A sculptor is playing absent-mindedly with a large cylindrical lump of clay on a potter's wheel. This particular wheel has wonderful balance and will turn without friction when taken out of gear. The lump of clay is a uniform cylinder of mass 23. 0 kg and radius 19. 0 cm ; the axis of the clay cylinder coincides with the axis of the wheel, and the rotational inertia of the wheel can be neglected in comparison with the rotational inertia of the clay cylinder. The artist decides to throw ball bearings of mass 182. 0 grams at the curved side wall of the turning cylinder and to watch what happens when the bearings hit and stick. Before the first throw, the cylinder is turning once every 1. 70 seconds ; when looked at from above, the cylinder is turning counterclockwise, so that the direction of the angular momentum of the cylinder is Up. The artist throws the first ball bearing horizontally, and it impacts the clay wall at an angle of 60. 0 degrees away from the normal to the curved clay surface. Once the ball bearing is stuck in the clay, the cylinder is found to be turning once every 3. 30 seconds , still turning counterclockwise. Consider the ball bearing to be traveling horizontally before impact; the ball bearing is traveling in a plane which is perpendicular to the axis of the clay cylinder and which contains the center of mass of the clay. What was the speed of the bearing before the collision?
1 Answer
importance of pressure in our daily life
1 Answer
Which statement describes what the hand shows?A-When the current flows down the wire, the magneticfield flows out on the left side of the wire and in on theright side of the wire.B-When the current flows up the wire, the magnetic fieldflows out on the left side of the wire and in on the rightside of the wire.C-When the current flows down the wire, the magneticfield flows in on the left side of the wire and out on theright side of the wire.D-When the current flows up the wire, the magnetic fieldflows in on the left side of the wire and out on the rightside of the wire.
1 Answer
A 5.0 gram piano wire spans 44.0 cm. to what tension must this wire be stretched to ensure that its fundamental mode vibrates at the d4 note (f
1 Answer
what is the current in a coil with a 861658 density of turns, that had a 388 x10-3 t magnetic field?
1 Answer
When fertilizers enter surface water, they cause problems in the watershed by
1 Answer
if you eat four cookies (140 calories total) each day more than you need to keep in energy balance, what will theoretically happen in one year?
1 Answer