12,726 Answered Questions for the topic physics

Physics

09/19/22

A car traveling at 10 m/s starts to negatively accelerate steadily. It comes to a complete stop in 20 seconds. What is its acceleration?
Follows • 0
Expert Answers •1
Physics

09/18/22

Physics Problem. Determine coefficient of static friction and acceleration.

Suppose m1 = 5.2 kg and m2 = 2.8 kg. Assume the pulley is massless and frictionless. A) What coefficient of static friction between the 85.0 N block and the table ensures static equilibrium? B)... more
Follows • 2
Expert Answers •1

09/18/22

stuck on math question
The surface x^2 + y^2 = 7 is a circular cylinder.What is an equation for the cross section at y = −7 using x and z.What is an equation for the cross section at y = 0 using x and z.What is an... more
Follows • 1
Expert Answers •1

09/18/22

help needed w/ math question
A pair of parametric equations is given below.x = 4 sin(t),  y = 4 cos(t), 0 ≤ t ≤ 𝜋Find a rectangular-coordinate equation for the curve by eliminating the parameter.My answer is y=sqrt... more
Follows • 1
Expert Answers •1
Physics

09/17/22

Can you help me with this problem??
At the half way mark of a 200 meter race the lead runner is running at a uniform speed of 10.3 m/s. The contestant in the second position is running at a speed of 10.1 m/s is 2 meter behind the... more
Follows • 1
Expert Answers •1
Physics

09/17/22

Can you help me with this question??
In a road with speed limit of 30 miles per hour, how much time (in minutes) will you gain by driving at an average speed of 5 miles per hour over the speed limit if it would take 30 minutes to... more
Follows • 1
Expert Answers •1
Physics

09/17/22

Physics Chase Problem
A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 23.0 m/s, and the distance... more
Follows • 1
Expert Answers •1
Physics

09/17/22

Car in northbound lane with acceleration going towards car in southbound lane 300m away going 25 m/s. When will they pass each other?
A car in the northbound lane is sitting at a red light. At the moment the light turns green, the car accelerates from rest at 2.0 m/s2m/s2. At this moment there is also a car in the southbound lane... more
Follows • 1
Expert Answers •1
Physics

09/17/22

kinematic word problem with two objects
Ryan and Eddie ran in the same direction at t=0. Ryan ran with an average velocity of 10 m/s while Eddie slowly increased his speed to 8 m/s in 20 seconds, then maintained its final velocity for... more
Follows • 1
Expert Answers •1
Physics

09/17/22

the magnitude of its centripetal acceleration in mm/s^2
The Earth is 149 million km from the sun. Assume its orbit is a circle. Find:  (a) the speed of Earth in its orbit;  (b) the magnitude of its centripetal acceleration.
Follows • 1
Expert Answers •1
Physics

09/16/22

An object with a mass of 0.400 kg is undergoing SHM with an amplitude of 0.025 m. The maximum acceleration of the object is observed to have a magnitude of 15 m/s2. Calculate:
a. the force constant of the springb. the maximum speed of the objectc. the acceleration (magnitude and direction) of the object when it is displaced 0.012 m to the left of its equilibrium position.
Follows • 1
Expert Answers •1
Physics

09/16/22

Can anyone help me with this question??
You are driving to your friends' house to pick them up to go to the movie theatre. The movie starts in 40 minutes. It takes you 10 mins to drive to your friends', and from there 15 more minutes to... more
Follows • 1
Expert Answers •1
Physics

09/15/22

particles q1=+8.0 uc , q2=+3.5 uc and q3 =-2.5 uc are in a line

forces and multiple charges
Follows • 1
Expert Answers •1
Physics

09/15/22

Newton's 2nd Law Based Question
A proton in a particle accelerator moves in a straight line as its speed increases from 2.61 × 105 m/s to 7.8 × 105 m/s as it travels a distance of 18.3 cm with constant acceleration.I got 7.93 *... more
Follows • 1
Expert Answers •1
Physics

09/15/22

Newton's 2nd Law Based Question
A 1.81-kg drone is flying over a lake. With both the x and y directions horizontal (that is, viewing the drone from above), the drone's velocity changes from (3.91 m/s)i + (0.00 m/s)j to (9.67... more
Follows • 1
Expert Answers •1
Physics

09/15/22

Newton's 2nd Law Based Question
A car with a mass m = 1280 kg is moving at a speed s = 25.9 km/h and needs to stop in a distance d = 30.5 m. a) Write an expression for the magnitude of the net force on the car as it is stopping... more
Follows • 1
Expert Answers •1
Physics

09/15/22

Find the speed, in mph, at which the sports car was driven around the circular track.
Performance tests of an automobile typically include measurements of the car’s handling capability, i.e. how well the tires can “grip” the road. In one standard test, the car is driven on a... more
Follows • 1
Expert Answers •1
Physics

09/15/22

Find the centripetal acceleration, in m/s^2, of the satellite.
A satellite moves in a circular orbit around the Earth at an altitude of 413 km and a speed of 17,100 mph. Find the centripetal acceleration, in m/s2, of the satellite. (Assume the Earth is a... more
Follows • 1
Expert Answers •1
Physics

09/14/22

Find the magnitude and direction of the resultant R of the three vectors shown in Figure 1.3.

Find the magnitude and direction of the resultant R of the three vectors shown in Figure 1.3. The vectors have the following magnitudes: A = 5.0, B = 7.9, and C = 8.0. Express the direction of the... more
Follows • 2
Expert Answers •1
Physics Math Science

09/14/22

Please help with calculating force on particle.
T‎wo fix‎ed par‎ticles, ea‎ch of ch‎arge 5.0x10-6, are 24 cm a‎part. wha‎t for‎ce do th‎ey exe‎rt on thir‎d pa‎rticle of c‎harge -2.5x10-6 t‎‎hat is 13 cm from eac‎h of th‎emExpress answer in... more
Follows • 1
Expert Answers •1

09/14/22

Lattice Energy Question
Does NaCl or Na2O have the largest lattice energy?
Follows • 1
Expert Answers •1
Physics

09/14/22

The position of a particle is given by r = (at2)i + (bt3)j + (ct -2)k, where a, b, and c are constants.
Follows • 2
Expert Answers •1
Physics Math Trigonometry

09/14/22

Help me solve this please
Water from a fire hose is directed toward a building as shown in the figure below. The water leaves the hose at a speed of vi = 40.0 m/s and at an angle of 𝜃i = 39.0° above the horizontal. The base... more
Follows • 1
Expert Answers •1
Physics

09/14/22

A bullet comes out of the barrel of gun of length 2 m with a speed 80ms-1. The average force on the bullet is Y Newton. Find the value of Y
Follows • 1
Expert Answers •1
Physics

09/14/22

Is the value of gravitational constant of the earth independent of the mass and radius of the earth?
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.