12,762 Answered Questions for the topic physics

Physics

04/23/24

Physics Distance and velocity

A bat flying in a cave emits a sound and receives its echo 0.15 ss later. Find the distance to the wall of the cave.
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Physics

04/23/24

Physics Frequency period

On a keyboard, you strike middle C, whose frequency is 256.0 HzHz. Find the period of one vibration of this tone. As the sound leaves the instrument at a speed of 340 m/sm/s, find its wavelength in... more
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Physics

04/23/24

Physics Frequency

A weight suspended from a spring is seen to bob up and down over a distance of 18 cmcm twice each second.What is its frequency? What is its period? What is the amplitude?
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Physics

04/23/24

Physics Frequency

Frequency = 1/period. A pendulum swings to and fro every 3.8 ss. Find its frequency of swing and the units.
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Physics

04/23/24

Physics Wavelength

Find speed v𝑣 if the distance traveled is one wavelength λ𝜆 and the time of travel is the period T𝑇(which equals 1/frequency).
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Physics Math

04/23/24

Rotational motion question
A uniform, solid cylinder with a mass M and radius R is pulled by a horizontal force F acting through the center. The cylinder rolls to the right without slipping. What is the magnitude of the... more
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Physics

04/23/24

Torque and rotational motion
A mass m attached to a light string of length L is located at an angle 𝜃 below the horizontal. The mass is then released from rest. Calculated from an axis perpendicular to the plane of the page... more
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Physics

04/23/24

Rotational motion question
A long rod of length L is pivoted about its left end. It is released from an angle 𝜃 above the horizontal. What is the magnitude of the angular acceleration of the rod about the pivot when the rod... more
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Physics

04/22/24

Two blocks are connected by string. The inclination of ramp is 39 degrees while the mass of blocks are m1 = 8.8 kg and m2 = 16.4 kg. Coefficient of kinetic friction of inclined block and ramp is 0.38
a) Calculate the magnitude of the acceleration a of the system in m/s^2. b) Calculate the magnitude of tension T in the string in Newtons.
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Physics

04/21/24

Student pushes a baseball 0.16kg down onto top of a vertical spring that has its lower end fixed to a table, compressing the spring a distance of 0.25m. The spring constant of the spring is 135N/m.
a) The ball is then released. What is its speed, v, in meters per second, just after the ball leaves the spring? b) What is the maximum height, h, in meters, that the ball reaches above the top of... more
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Physics

04/21/24

Circular Motion Problem
At a radius of 161.178 m, and a centripetal acceleration of 6.58 times free-fall acceleration, what is the magnitude of the net force that maintains circular motion exerted on the 111 kg pilot by... more
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Physics

04/21/24

Circular motion problem
An airplane is flying in a horizontal circle at a speed of 103 m/s. The 81.0 kg pilot does not want the centripetal acceleration to exceed 5.29 times free-fall acceleration. Find the minimum radius... more
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04/19/24

What is the velocity in feet per second of the flow through the radiator?
To test the flow of coolant through a radiator with a 2 inch diameter passage, a flow of 5 gallons was recorded in 4 minutes. Find the velocity in feet per second of the flow through the radiator.
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Physics Math

04/17/24

Solving for Resultant vector and relative Angle
How would you solve the following resultant vector R and angle θ based on the following description (its mentioned that R=A+B+C?):Starting from central point O on the cartesian plane, going... more
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Physics Math

04/17/24

Displacement, velocity and acceleration

A large boulder is ejected vertically upward from a volcano with an initial speed of 50 m/s. Ignoring air resistance:a) At what time after being ejected is the boulder moving at 25 m/s upward?b) At... more
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Physics Math

04/17/24

Solving the length and angle of a given Vector
How can I solve for R and θ in the following vector diagram: https://ibb.co/yNnsjvG
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Physics Math

04/17/24

Measurements and Calculating Measurement Error
If a thin piece of wire is measured with a Vernier calliper and produces the following lengths: 1.23±0.05mm, 1.19±0.04mm and 1.21±0.05mm, how can the length of wire be determined along with its... more
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Physics

04/16/24

21. Answer in units of W/m · °C.
A box with a total surface area of 1.66 m^2 and a wall thickness of 6.23 cm is made of an insulating material. A 11 W electric heater inside the box maintains the inside temperature at 22.3 °C... more
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Physics

04/16/24

Phyisics Primary Power Supply

An ideal transformer has 50 turns in its primary and 400 turns in its secondary. 14-VV ac is connected to the primary. What is the power supplied to the primary? Not sure how to do this problem.
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Physics

04/15/24

Physics Voltage Transformer

An ideal transformer has 50 turns in its primary and 400 turns in its secondary. 14-VV ac is connected to the primary. What is the voltage available at the secondary? What is the current in a... more
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Physics

04/15/24

Physics Electric transformer

A model electric train requires 6 VV to operate. When it is connected to a 120-VV household circuit, a transformer is needed. If the primary coil of the transformer has 260 turns, find how many... more
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Physics Math

04/15/24

Please assist with Vector addition using Graphical and Analytical methods - Horizontal Force Board
After doing an experiment on vector addition using a Horizontal force board (Gravesand Apparatus), with the need to use graphical and analytical methods of vector addition. For the Horizontal force... more
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Physics Math

04/15/24

Vector addition using Vertical force board
After doing an experiment on vector addition using a Vertical force board (Gravesand Apparatus), with the need to use graphical and analytical methods of vector addition. For the Vertical force... more
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Physics Math Algebra 1

04/15/24

Please need assistance with Vector Addition using Graphical and Analytical methods
After doing an experiment on vector addition using a Horizontal force board (Gravesand Apparatus), with the need to use graphical and analytical methods of vector addition. For the Horizontal force... more
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Physics Math Algebra 1

04/15/24

Need help with Vector addition using a Graphical and analytical methods?
After doing an experiment on vector addition using a Horizontal force board (Gravesand Apparatus), with the need to use graphical and analytical methods of vector addition. For the Horizontal force... more
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