12,853 Answered Questions for the topic physics

Physics

09/21/22

please help me with this physics question
A stunt woman of mass 50.0 kg can run at a top speed of 19.2 mph. A film requires that she run and jump off a cliff that sits 13.3 m above the surface of a lake. However, she must clear a shelf of... more
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Physics

09/20/22

Physics Question
The velocity of the transverse waves produced by an earthquake is 4.35 km/s, while that of the longitudinal waves is 4.13 km/s. A seismograph records the arrival of the transverse waves 64.72 s... more
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Physics

09/20/22

AP Physics: A sports car moving at constant velocity travels 120 m in 5.0 s. It then brakes and comes to a stop in 4.0 s. Questions in description
a. How fast is the far moving during the first 5 s?b. What is the magnitude of the acceleration of the car as it brakes and comes to a stop?
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09/20/22

Refraction in a prism
I'm having problems with this optics problem:Glass prism ABC with refractive index n1 = 1.6, vertex A angle α = 40° and vertex B angle β = 60°,placed in a container with two different liquids... more
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09/20/22

Kirchoff's laws and electrical circuit
Two batteries with emf ε1 = 10 V and emf ε2 = 20 V and internal resistances r1 = 1 Ω and r2 = 2 Ω, respectively, are connected in parallel, and then connected in parallel to a resistor of R = 30 Ω... more
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09/20/22

Melting ice cubes
Two identical ice cubes are placed in two large containers, one containing tap water and the other containing a strong saline solution. Both liquids are of equal volume and at the same room... more
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Physics

09/19/22

If jack was traveling at 100 miles in 2 hours what was his speed in miles per minute

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Physics

09/19/22

A Box with Friction
A rope is pulling horizontally to the right on a box of weight 32.0 N which is sliding across the floor at a constant speed. The coefficient of kinetic friction between the floor and the box is... more
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Physics

09/19/22

Nick travels 2.50km north followed by 4.30km south and then 1.40km north
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09/19/22

Weight and Mass Conversion with Constant Acceleration
Hello, I'm having some issues with these homework questions and would appreciate a walkthrough of what kind of equation I'm supposed to use. Thank you in advance!"An astronaut weighs 658 N on... more
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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?
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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
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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
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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
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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
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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
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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
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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
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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
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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.
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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.
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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
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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
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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
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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
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