12,726 Answered Questions for the topic physics

10/08/23

At what temperature does specifying Celsius or Fahrenheit not matter?
There is a specific temperature, where if you had a Celsius and a Fahrenheit thermometer, the values on both thermometers would read the same numerical value. Determine the temperature this occurs... more
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Physics

10/08/23

what additional radical force is necessary to prevent a race car from drifting on the curve at 175 mi/h?
an engineer wants to design an oval racetrack such that 3.20e3 lb race cars can round the exactly 1000 ft radius turns at 95 mi/h without the aid of friction. she estimates that the cars will wound... more
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Physics

10/07/23

Physics Motion on an incline
A block starts sliding up an incline with an initial velocity of v0 = 4 m/s, as shown.If the angle of the inclined plane, � = 15 degrees, and the coefficient of kinetic friction between the block... more
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Physics

10/06/23

Need help with vector question about calculating magnitude of total displacement
On a bike ride you ride east at 10 miles/hour for 20 minutes then ride north at 11 miles/hour for 30 minutes and then ride southwest (45o west of south) at 22 miles/hour for 15 minutesCalculate the... more
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Physics

10/05/23

Need help finding maximum force
 A 3 kg box is sitting atop a 4 kg box on level ground. You begin pushing horizontally on the bottom 4 kg box to start the stack moving. The coefficients of friction between also surfaces... more
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Physics

10/05/23

A car of mass 1200kg slows down from a speed of 20 m/s to 10 m/s how much kinetic energy does the car lose
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Physics

10/05/23

Physics-SCALLOP FORCE QUESTION
Scallops eject water from their shells to provide a thrust force. The figure shows a smoothed graph of actual data for the initial motion of 25 g scallop speeding up to escape a predator. What is... more
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Physics

10/05/23

Physics HW-Force Question! Help! I thought I got it right but it is not!
A skydiver has his parachute open and is floating downward through the air at a constant speed. Identify all the forces acting on the system skydiver-parachute...OPTIONS:-Kinetic friction... more
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Physics

10/05/23

Physics HW ?-Acceleration and Force
In t-ball, young players use a bat to hit a stationary ball off a stand. The 140 g ball has about the same mass as a baseball, but it is larger and softer. In one hit, the ball leaves the bat at... more
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Physics

10/05/23

Physics Homework ?- Acceleration and forces
A compact car has a maximum acceleration of 5.0 m/s^2 when it carries only the driver and has a total mass of 1300 kg. What is its maximum acceleration after picking up four passengers and their... more
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Physics

10/05/23

Physics Homework-Forces
World class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has a magnitude 15 m/s^2. How much horizontal force F must a sprinter of mass... more
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Physics

10/04/23

Estimate the magnitude of the magnetic field at ground level generated by an overhead AC power line service drop connecting a single home to a utility pole.
Estimate the magnitude of the magnetic field at ground level generated by an overhead AC power line service drop connecting a single home to a utility pole.
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Physics

10/04/23

How much time does it take for a spinning baseball with an angular speed of 38 rad/s to rotate through 15o?
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Physics Chemistry

10/04/23

brackets or paschen
if a radiation of 2000 nm was observed for hydrogen, does it fall under bracket or paschen series
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Physics

10/03/23

Finding average velocity

Find the average velocity of the car during the last three seconds.Answer in units of m/s.
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Physics

10/03/23

Finding average velocity

A polar bear starts at the North Pole. It travels 1 km South, then 1 km East, then 1 km North to return to its starting point. This trip takes 0.5 h.What was the bear’s average velocity? Answer in... more
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Physics

10/03/23

Momentum Physics│Please Help!
Which car has the most kinetic energy?a.2 kg car driving at 5 kph b.2 kg car driving at 5 kph c.4 kg car driving at 5 kph d.4 kg car driving at 5 kph e.2 kg car driving at 10 kphf.4kg car driving... more
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Physics

10/03/23

Momentum Physics│Please Help!
1.A 5 kg object is moving with a velocity of 10 m/s. An impulse of 100 N/s is applied to the object. What is the momentum of the object after the impulse is applied?2.A 4 kg mass moves at 2 m/s... more
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Physics

10/02/23

Apparent Weight, Centripetal Force question
An elementary student of mass m = 28 kg is swinging on a swing. The length from the upper bar of the swing set to the seat is L= 4.2 m. The child is attempting to swing all the way around in a full... more
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Physics

10/02/23

PHYSICS PRACTICE PROBLEM-NEED HELP FOR EXAM COMING UP
A frog jumps straight up with an initial vertical velocity of 2.5 m/s. Ignoring air resistance, from the time it leaves the ground how long does it take the frog to return to the ground AND what... more
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10/01/23

using focused laser light, optical tweezers can apply a force of about 10 pn to a 1.0-/un diameter polystyrene bead, which has a density about equal to that of water: a volume of 1.0 cm3 has a mas
using focused laser light, optical tweezers can apply a force of about 10 pn to a 1.0-/un diameter polystyrene bead, which has a density about equal to that of water: a volume of 1.0 cm3 has a mass... more
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10/01/23

using focused laser light, optical tweez
using focused laser light, optical tweezers can apply a force of about 10 pn to a 1.0-/un diameter polystyrene bead, which has a density about equal to that of water: a volume of 1.0 cm3 has a mass... more
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Physics

09/30/23

Physics question

If a marble is launched straight upward at a speed of 15 m/s and doesn't hit anything on its way up or down, it will reach a height of about 11.5 m above the launch point before it starts falling... more
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09/30/23

find the magnetic field at a distance r from an infinite wire
find the magnetic field at a distance r from an infinite wire through which a stationary current passes I. Then find the magnetic vector potential
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09/30/23

A given referential circuit R is positioned at a certain distance from a magnetic dipole

A given referential circuit R is positioned at a certain distance from a magnetic dipole a) In a certain reference frame A, the circuit moves with speed v and the dipole is stationary. Use the... more
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