12,725 Answered Questions for the topic physics

Physics

08/21/22

Physics 101 question
At time t = 0 an object is traveling to the right along the ±x axis at a speed of 10.0 m􏰀s with acceleration –2.0 m􏰀s2. Which statement is true?(a) The object will slow down, eventually coming to... more
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Physics

08/17/22

Physics scientific notation

If the volume of an olympic swimming pool is 2,500 m3 and the volume of a ping pong ball is 3.351×10-5 m3, how many ping pong balls would it take to fill the pool?You go on Amazon and find a pack... more
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Physics

08/16/22

in the united states electrical system the electric current in a 75 watt light bulb is 6,250mA. What is this current in amperes
i don’t know
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Physics

08/15/22

How long is a simple pendulum with a period of 5 seconds? How long would this pendulum have to be if it were to operate on the moon

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Physics

08/15/22

How long is a simple pendulum with a period of 5 seconds? How long would this pendulum have to be if it were to operate on the moon

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Physics Math Geometry

08/12/22

Shortest Distance Question
Find the shortest distance from point (2, 3) to the line through (–3, 2) and (1, –4). (8 marks) Please answer in detail
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Physics

08/09/22

A metal rod of length 2 meters and diameter 1.5 centimeters has mass 2.827 kilograms. What is its density in kilograms per cubic meter?
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08/09/22

Question dealing with Physics, specifically working with spherical coordinates, uni level.
The spherical coordinates of a circular ring are a, α. A sphere of relative capacitivity K and radius b has the origin as its center. If the ring carries a charge of linear density τ, find the... more
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Physics

08/08/22

What's the distance between the stoplights?
A car starts from rest at a stoplight and in 8 seconds reaches a speed of 72 km/h. It goes on at that speed for 20 seconds to then stops at another stoplight in 4 seconds. What's the distance... more
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Physics Math

08/05/22

Find the Maximum height reached
A stode is thrown upward so that any time x (in second) after throwing, the height of the stone is y=100+10x-5x^2 (in meter) . Find the maximum height reached?
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08/03/22

Determine the minimum diamter required for the shaft of a simple torsion-bar.
A simple torsion-bar spring is shown. The shear stress in the steel [G = 11,500 ksi] shaft is not to exceed 11000 psi, and the vertical deflection of joint D is not to exceed 0.650 in. when a load... more
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08/03/22

Determine the internal bending moment and bending stress. Please help
The cross-sectional dimensions of a beam are shown. Assume bf=1.875 in., tf=tw=0.375 in. and d=4.75 in.(a) If the bending stress at point K is 2350 psi (T), determine the internal bending... more
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08/02/22

Physics problem about two rotating discs
Two parallel discs are freely rotating around the same vertical axis and in the same direction. The moment of inertia of the first disc is I1, angular velocity - ω1. The moment of inertia of the... more
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08/02/22

Body rotating about its axis problem
A rigid body composed of n particles with positions xi, and masses mi (i = 1, 2, . . . , n), rotates about the z-axis with constant angular speed ω. Show that the body’s kinetic energy is T = 0.5... more
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08/02/22

Trolley travelling along a frictionless track
A trolley travels with initial speed v0 along a frictionless, horizontal, linear track. It slows down by ejecting gas in the direction of motion. The gas is emitted at a constant mass ejection rate... more
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08/02/22

Long Exposure Pictures (Circular? vs. Streaks. Center Point? Always Same? What is the Star?)
To an expert that can help my curiosity,How is it the night sky becomes a circular streak of chalk like lines on a space/sky canvas on a long exposure pictures? Would it not consist of streaks... more
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07/30/22

World Record in Pole Vaulting: Math and Physics applied to Olympic Games
For more than two decades the world record in pole vaulting had been at 6.14 m (Sergej Bubka, 07/31/1994). Today there are a few athletes with even more impressive results. Assume the maximal... more
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Physics

07/30/22

98 Km/min to Km/hr (Please solve this question ASAP)
If a car is travelling at the speed of 98 Km/min. Then, what would be the car's speed if converted 98 Km/min to Km/h?Also, describe the formula you have done the sum and explain how to convert... more
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Physics

07/29/22

What is the frequency of motion?
A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the block is at xxx = 0.350 mm, the acceleration of the block is -5.84 m/s2m/s2.
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Physics

07/27/22

What would the current I1 be in (Figure 1) if the 12- Ω resistor is shorted out? Let r = 1.5 Ω

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07/26/22

Equilibrium of a System
A triangular plate, vertices at points A, B and C, has uniformly distributed mass M and is held horizontally with the help of three vertical forces acting through the three vertices. If AB = c, BC... more
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Physics

07/25/22

physics question multiple choice
an object traveling in a straight line with v=-15[m/s], and a=+2 [m/s^2] this object is:a) traveling at a constant speed towards the origin.b) moving away from the origin speeding upc) none of the... more
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Physics

07/25/22

An apartment has the dimensions 16 m by 8 m by 5 m. The temperature is 30°C, and the relative humidity is 56 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
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07/25/22

Physics problem about throwing a stone into a well
The diameter of the well is d = 1.3 m, and the distance from the top of the well to the water surface is h = 5 m. What is the minimum velocity required to throw a stone from a point located a = 9 m... more
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07/25/22

Forces on a point particle
Two forces F1 = 3 N and F2 = 4 N act upon a point particle, the forces respectively form angles α = 10° andβ = 40°. Find the magnitude and angle of the resultant force with the x-axis. Consider two... more
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