12,795 Answered Questions for the topic physics

Physics

11/09/22

Please help me!
A person standing a certain distance from an airplane with four equally noisy jet engines is experiencing a sound level of 132 dB.  What sound level would this person experience if the captain... more
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Physics

11/09/22

high school physics

ALWAYS use significant figure rules. Remember that these rules apply to all numbers that are measurements.A missile is fired from a jet flying horizontally at Mach 2 (2200 ft/s). The missile has a... more
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Physics

11/09/22

calculate the horizontal force needed to make a 3.8 kg baseball accelerate at a 641m/s^2
this problem is from a worksheet and need help solving itanswer the problem using one of this equations (F=ma) and (W=mg)
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Physics

11/08/22

A 10.5 kg board 6.00 m long is supported by two sawhorses, one at each end. A 4.45 kg saw sits on the board 1.80 m from the left end. Find the upward force that the LEFT sawhorse exerts on the board.
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Physics

11/08/22

Force Question 1
How much force is required to stop a 1000 kg car in 5.0 seconds if it is traveling at 30m/s?
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Physics

11/08/22

Physics forces 1
A 50kg suitcase is being pulled across a level floor by a force of 250 N at an angle of 65 above the horizontal. The coefficient of kinetic friction between the suitcase and the floor is .05. Can... more
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Physics

11/08/22

Physics undergraduate upper level E&M homework help
Spherical symmetric charge-current system: A sphere (surface) is uniformly charged with anamount 𝑞. Its radius oscillates as a function of time as 𝑅(𝑡) = 𝑅0 (1 + cos𝜔 𝑡)/2. You may make theusual... more
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Physics

11/08/22

Net/Everyday Forces
You hang a spring from a tree and measure its length to be 1.0m. You suspend 15kg from the spring and i stretches to a new length of 1.4m. Find the spring constant for this spring.
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Physics

11/08/22

Net/Everyday Forces
You hang a spring from a tree and measure its length to be 1.0m. You suspend 15kg from the spring and i stretches to a new length of 1.4m. Find the spring constant for this spring.
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Physics

11/07/22

i need help on this question for physics
A person weighs 613 N on Earth.1) What is their mass?  This person goes to Jupiter where gravity = 24.79 m/s².2) What is their weight on Jupiter? 
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Physics

11/07/22

i need help on this question for physics
A person weighs 613 N on Earth.1) What is their mass?  This person goes to Jupiter where gravity = 24.79 m/s².2) What is their weight on Jupiter? 
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11/07/22

Find the equation of motion of a force of a spring
A spring with a spring constant k of 20 pounds per foot is loaded with a 10-pound weight and allowed to reach equilibrium. It is then displaced 1 foot downward and released. If the weight... more
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Physics

11/07/22

General College Physics I
An IV bag containing medication is suspended some height above the injection point in the patient's hand. To make the medication get into the vein instead of blood flowing out of the vein, the... more
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Physics

11/06/22

Physics ut onramps
This question is typical on some driver's license exams: A car moving at 44 km/h skids15 m with locked brakes.How far will the car skid with locked brakes at 110 km/h? Assume that energy loss is... more
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Physics

11/06/22

Physics ut onramps
This question is typical on some driver's license exams: A car moving at 44 km/h skids15 m with locked brakes.How far will the car skid with locked brakes at 110 km/h? Assume that energy loss is... more
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Physics Calculus

11/05/22

A boy jumps off a tower 1000 feet high with an initial velocity of 120 ft/sec. At the same time, a girl walks on the ground along the foot of the tower

according to the equation of motion G(𝑡) = 𝑡^3 −10𝑡^2 + 25𝑡 + 1, where G is the girl’s directed distance at any time 𝑡 from the point directly under the path of the boy’s path of motion. What is... more
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Physics

11/05/22

Physics-Question, Homework

Question-I've yet to figure out: please help."A motorboat accelerates uniformly from a velocity of 6.2 m/s to the west to a velocity of 2.1 m/s to the west. If its acceleration was 3.4 m/s2 to the... more
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Physics

11/05/22

Please help me! :(
How fast does water flow from a hole at the bottom of a very wide 5.8 m deep storage tank filled with water? Ignore viscosity.   (The density of water is 1000 kg/m3)    
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Physics

11/05/22

Please help me! :(
The maximum gauge pressure in a hydraulic lift is 17.0 atm.  What is the largest-size vehicle (kg) it can lift if the diameter of the output line is 23.0 cm?      
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Physics

11/05/22

Please help me! :(
If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 53 cm x 25 cm x 22 cm, what would its mass be?  
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Physics

11/05/22

please help me! :(
What is the difference in blood pressure (in mm of Hg) between the top of the head and bottom of the feet of a 1.61m-tall person standing vertically?  (The density of blood is approximately 1060... more
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Physics

11/05/22

please help me ! :(
How high must the gauge pressure in a fire hose be if the fire hose is to spray water to a height of 21 m?   (The density of water is 1000 kg/m3)
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Physics

11/04/22

A toy car is on a bus floor (more information below)
the bus is going to the right when it comes to a stop the toy car with frictionless wheels then moves to the right at a steady speed.Choose One: there are significant equal and opposite forces... more
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Physics

11/04/22

Uniform Beam & Force

A 12.0 m uniform beam is hinged to a vertical wall and held horizontally by a 5.00 m cable attached to the wall 4.00 m above the hinge, as shown in the figure below (Figure 1). The metal of this... more
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Physics

11/04/22

Tension & Force
A uniform beam 3.60 m long and weighing 2100 N carries a 3850 N weight 1.50 m from the far end, as shown in the figure below (Figure 1). It is supported horizontally by a hinge at the wall and a... more
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