12,726 Answered Questions for the topic physics

Physics

10/29/23

Question and Problem information is in "Description" below.

A spring with a spring constant of k = 191 N/m is initially compressed by a block at a distance d = 0.39 m from its unstretched length. The block is on a horizontal surface with coefficients of... more
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Physics

10/29/23

Calculate the minimum coefficient of friction needed to negotiate the curve.

A car negotiates an unbanked 80.7 m radius curve at 23.4 m/s.
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Physics

10/29/23

This problem has two parts to this. I will type the questions for both parts along with additional info in the "
A woman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. The book has a mass of m = 1.1 kg and the coefficient of static friction... more
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Physics

10/28/23

ap physics question
A block of mass 2 kg slides along a horizontal tabletop. A horizontal applied force of 12 N and a verticalapplied force of 15 N act on the block, as shown above. If the coefficient of kinetic... more
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Physics

10/28/23

You illuminate a slit with a width of 76.9 micrometers with a light of wavelength 715 nm and observe the resulting diffraction pattern on a screen that is situated 2.69 m from the slit. What is the w
You illuminate a slit with a width of 76.9 micrometers with a light of wavelength 715 nm and observe the resulting diffraction pattern on a screen that is situated 2.69 m from the slit. What is the... more
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Physics

10/28/23

You set your slit spacing at 1.13 mm and place your screen 8.75 m from the slits. Then, you illuminate the slits and find that the tenth bright fringe is 4.95 cm away from the central bright fringe...
You set your slit spacing at 1.13 mm and place your screen 8.75 m from the slits. Then, you illuminate the slits and find that the tenth bright fringe is 4.95 cm away from the central bright fringe... more
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Physics

10/28/23

Double slit experiment: You set your slits 1.03 mm apart and position your screen 3.93 m from the slits. The wavelength of the laser is 631 nm. How far on the screen are the first bright fr
Double slit experiment: You set your slits 1.03 mm apart and position your screen 3.93 m from the slits. The wavelength of the laser is 631 nm. How far on the screen are the first bright fringe and... more
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Physics Science

10/28/23

Mechanical Equilibrium; How set this up?
A beam that is 5.0 m long has a weight of 80 N. It is supported at each end by a wooden post. On top of the beam is half of an identical beam, as shown in the diagram. The magnitude of the force... more
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Physics

10/28/23

Rotation problem (I am completely lost please help!)
A girl pushes on a large stone sphere. The sphere has a mass of 8200 kg and a radius of 90 cm and floats with nearly zero friction on a on the sphere tangent to its surface with a steady force... more
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Physics

10/28/23

Physics torque problem (I have the answer but I do not understand how they got there, please help!)
A 220 g , 25-cm-diameter plastic disk is spun on an axle through its center by an electric motor. What torque must the motor supply to take the disk from 0 to 1500 rpm in 4.5 s? (The answer is... more
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Physics

10/28/23

PHYSICS-diameter, inertia, and mass (I thought I understood but kept getting wrong answer)
A bicycle rim has a diameter of 0.65 m and a moment of inertia, measured about its center, of 0.19 kg⋅m2What is the mass of the rim?
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Physics

10/28/23

Anatomy and Torque Question (please help! I am confused!)
An athlete at the gym holds a 3.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out... more
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Physics

10/28/23

PHYSICS-Force and torque question (I am confused on these types of problems)
The tune-up specifications of a car call for the spark plugs to be tightened to a torque of 34 N⋅m . You plan to tighten the plugs by pulling on the end of a 25-cm-long wrench. Because of the... more
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Physics

10/28/23

PHYSICS-Earth radius and speed question
The earth's radius is 6.37×106m6.37×106m; it rotates once every 24 hours. The earth's angular speed is 7.3×10−5 rad/s. The speed of a point on the equator is 460 m/s. What is the speed of a point... more
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Physics

10/28/23

Angular Speed Physics problem-I know the answer but want to understand how to do it.
What is the angular speed of the tip of the minute hand on a clock, in rad/s?
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Physics

10/28/23

Radians and Clock physics question-behind in class and need help
What is the angular position in radians of the minute hand of a clock at 1:15?
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Physics

10/28/23

PHYSICS WORD PROBLEM-TORQUE
A tradesman sharpens a knife by pushing it against the rim of a grindstone. The 50 cm diameter stone is spinning at 200 rpm and has a mass of 29 kg. The coefficient of kinetic friction between the... more
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Physics

10/28/23

This problem has four parts to this. I will list the question for each of the four parts and additional info in the "Description" below.
An ice skater is travelling in a straight, horizontal line on the ice with a velocity of v = 9.5 m/s in the positive x-direction. The coefficient of kinetic friction between the skates and the ice... more
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Physics

10/28/23

This problem has two parts. The questions of both parts along with additional info will be listed in "Description".
Suppose a 57.5 kg gymnast is climbing a rope. Therefore, m = 57.5 kg. Part a) What is the tension in the rope, in newtons, if he climbs at a constant speed?Part b) What is the tension in the rope,... more
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Physics

10/27/23

Wave Properties│Please Help!
A wave along a guitar string has a frequency of 540 Hz and a wavelength of 2.5 meters. Calculate the speed of the wave.
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Physics

10/27/23

Wave Properties│Please Help!
The speed of sound in air is about 340 m/s. What is the wavelength of sound waves produced by a guitar string vibrating at 490 Hz?
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Physics

10/27/23

Wave Properties│Please Help!
The note A above middle C on a piano emits a sound wave with a wavelength of 0.77 meters. What is the frequency of the wave? Use 340 m/s as the speed of the sound wave. What is the period of the... more
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Physics

10/26/23

Monument & Energy│Please Help!
A car crashes and experiences an impulse of magnitude 5000 km/s. If the collision occurs in 0.01 s, what is the force the car experiences?Remember that F =Δp/t where F = force, Δp = impulse, and... more
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Physics

10/26/23

Monument & Energy│Please Help!
A 1000 kg car is moving at 8 m/s when it crashes into a pole and comes to a stop. What is the impulse experienced by the crash? Remember that impulse is defined to be the change in momentum of an... more
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Physics

10/26/23

Solve this Physics Problem
A girl on a skateboard (total mass of 40 kg) is moving at a speed of 13 m/s at the bottom of a long ramp. The ramp is inclined at 11° with respect to the horizontal. If she travels 14.0 m upward... more
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