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Physics

07/17/22

An iron vat is 18 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?

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Physics

07/17/22

An iron vat is 18 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?

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Physics

07/16/22

physics question

A 595-g squirrel with a surface area of 925 cm2 falls from a 5.2-m tree to the ground. Estimate its terminal velocity. (Use the drag coefficient for a horizontal skydiver. Assume that the squirrel... more

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Physics

07/16/22

What are the magnitude and direction of electric field midway between these two charges? (k = 1/4πε0 = 9.0 × 109 N • m2/C2)

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Physics

07/15/22

A body covers 200 c m in the first 2 seconds and 220 c m in the next 4 seconds. The velocity of the body at the end of the 7 t h second is :

a. 40m/sb. 200m/sc. 10m/sd. 5m/s

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Physics

07/14/22

Is centrifugal force inertia of motion?

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Physics Math

07/14/22

A person travels first half time with speed u, and next half time with speed v. Find the avg speed

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Physics

07/14/22

the phase of the spring oscillator when it is first 2 cm away from the equilibrium position is:

If a horizontally placed spring oscillator pulls 4 cm positive along the X axis and then releases, the phase of the spring oscillator when it is first 2 cm away from the equilibrium position is:A.... more

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Physics

07/14/22

Which end has the higher pressure, the thick end or the fine end, give out the pressure difference between them.

A water pipe has a thick and a fine end. The radius of the thick is 3cm, and the radius of the fine is 1cm. The thick end is 6 meters higher than the fine end. Ask: how about the flowing speed in... more

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Physics

07/14/22

Which end has the higher pressure, the thick end or the fine end, give out the pressure difference between them.

A water pipe has a thick and a fine end. The radius of the thick is 3cm, and the radius of the fine is 1cm. The thick end is 6 meters higher than the fine end. Ask: how about the flowing speed in... more

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Physics Science

07/14/22

calculate the work of electric field force...

Positive charge Q is evenly distributed on a thin ring with a radius of R, the centre of which is point O. Axis OP is pendicular to the plane containing the thin ring. The length of OP is 2R.... more

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Physics Math

07/13/22

How do I find the time taken for A to overtake B? (Details below)

Two particles A and B are moving in the same direction on parallel horizontal tracks. At a certain point, A which is travelling with a speed of 7m/s and accelerating uniformly at 1.5m/s^2 overtakes... more

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Physics

07/13/22

what would be the charge on the vertices of a square with given features ;

If the four vertices of the square ABCD are placed with an equal amount of charge, and thepotential of the intersection of the two diagonal lines of the square is 0, there must be four verticesof... more

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Physics

07/13/22

find the ratio of the light intensity of the transmitted light to the light intensity of the incident light is?

A beam of linear polarized light is perpendicular to a polarizer. Set the vibration direction of the linear polarized light and the transmittance axis of the polarizer at a π/3 angle, then find the... more

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Physics

07/13/22

How is the distance 23m?

Two boxes of mass 30.0 kg and 10.0 kg are at rest side by side (Figure 5). You apply a force of 3.0* 10*2 N on the first box for 5.0 s, and they both slide across the floor. The larger box has a... more

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Physics Science Act Science

07/12/22

Interesting tricky physics problem

A spacecraft (with velocity v) moves towards a cloud of cosmic dust of density p2. The dust that hit the spacecraft, sticks to it. Then the engine is turned on, so that the velocity of the... more

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Physics

07/10/22

One particular roundabout has a radius of 40m. What is the maximum speed a 1200 kg car can go around it without skidding if

a) the road is dry and the coefficient of static friction is 0.8b) the road is icy and the coefficient of static friction is 0.2

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Physics

07/10/22

A train has one locomotive and 25 cars. Each of the cars has a mass of 55,000 kg.

The train needs to go up a hill that is angled 1.1 degrees up from the horizontal. What does the mass of the locomotive have to be for it to climb the hill at constant speed? You can assume all the... more

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Physics

07/10/22

Activity of intergration

A barber wants to set up a salon in a room measuring length of 3m by 3m. He has a simple wooden chair, 3 large mirrors and one bulb.Using the knowledge of shadows and reflection, advise the barber... more

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Physics

07/09/22

Electric field from charged plates

Two parallel plates of area5.68*10^-3 m^2 have equal andopposite charges of 4.38*10^-11 Cplaced on them. What is theelectric field between the plates?Could someone please answer this thourghly ?

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Physics Science Act Science

07/09/22

Physics problem: rope sliding off the fence

A rope of length l<h is thrown over a fence of height h. Initially, the rope is in equilibrium position. At some moment, the equilibrium is lost and the rope slides off the fence. Find how much... more

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Physics Science Act Science

07/09/22

Two balls undergoing an elastic collision

Two balls of masses m1=0.3 kg and m2=0.2 kg are hanging on the same kind of thin threads that are attached to the same point. Keeping the thread tense, the first ball is raised to the height of H=7... more

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Physics Science Act Science

07/09/22

Interesting physics problem about a rope attached to an inclined plane

After many attempts, I don't really understand how to solve this physics problem:A rope of lenght l=20 cm is attached to an inclined plane (plane's angle of displacement is α = 30°). The other end... more

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Physics Science Act Science

07/09/22

Physics problem: connected inclined planes

There are two inclined planes with the same curvature and the same mass M put on a horizontal surface. A small body of mass m is set to slide off (without friction) from height h on one plane.... more

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Physics Science Act Science

07/08/22

Hard physics problem about object attached to a thread

A thread of lenght l<AB is tied to the top (point A) of the stem AB. The other end of the thread is attached to an object. The thread is stretched out horizontally and then the object is... more

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An iron vat is 18 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?

An iron vat is 18 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?

physics question

What are the magnitude and direction of electric field midway between these two charges? (k = 1/4πε0 = 9.0 × 109 N • m2/C2)

A body covers 200 c m in the first 2 seconds and 220 c m in the next 4 seconds. The velocity of the body at the end of the 7 t h second is :

Is centrifugal force inertia of motion?

A person travels first half time with speed u, and next half time with speed v. Find the avg speed

the phase of the spring oscillator when it is first 2 cm away from the equilibrium position is:

Which end has the higher pressure, the thick end or the fine end, give out the pressure difference between them.

Which end has the higher pressure, the thick end or the fine end, give out the pressure difference between them.

calculate the work of electric field force...

How do I find the time taken for A to overtake B? (Details below)

what would be the charge on the vertices of a square with given features ;

find the ratio of the light intensity of the transmitted light to the light intensity of the incident light is?

How is the distance 23m?

Interesting tricky physics problem

One particular roundabout has a radius of 40m. What is the maximum speed a 1200 kg car can go around it without skidding if

A train has one locomotive and 25 cars. Each of the cars has a mass of 55,000 kg.

Activity of intergration

Electric field from charged plates

Physics problem: rope sliding off the fence

Two balls undergoing an elastic collision

Interesting physics problem about a rope attached to an inclined plane

Physics problem: connected inclined planes

Hard physics problem about object attached to a thread

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