12,795 Answered Questions for the topic physics

Physics

11/20/22

A scale reads 136 N when a piece of copper is hanging from it. What does it read (in N) when it is lowered so that the copper is submerged in water?
A scale reads 136 N when a piece of copper is hanging from it. What does it read (in N) when it is lowered so that the copper is submerged in water?
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Physics

11/20/22

Atwood machine ---
A 5.00 kg object placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging 8.50 kg object, as shown in the figure. Find the... more
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Physics

11/19/22

How to Find Tension
A 1-kg bird sits on the middle of a clothesline whose supports are 10m apart. The clothesline sags by 1m. If the weight of the clothesline is negligible, find the tension on it.I would really... more
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Physics

11/19/22

the absolute electric potential at a point 48cm away from a charged particle is 1.5 microvolt. find the charge of the charged particle
help me
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Physics

11/18/22

A 0.74 kg projectile is fired into the air from the top of a 8.11 m cliff above a valley.

Its initial velocity is 8.2 m/s at 36 ◦ above the horizontal. How long is the projectile in the air? The acceleration due to gravity is 9.8 m/s 2 . Answer in units of s.How far from the bottom of... more
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Physics

11/17/22

 Iron is submerged in water question
A scale reads 234 N when a piece of iron is hanging from it. What does it read (in N) when it is lowered so that the iron is submerged in water?
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Physics

11/17/22

How far below the surface of the water is the boat's bottom when it is floating in water?
A boat (with a flat bottom) and its cargo weigh 6,600 N. The area of the boat's bottom is 9 m2. How far below the surface of the water is the boat's bottom when it is floating in water?
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Physics

11/17/22

Compute its maximum payload at sea level
A modern-day zeppelin holds 9,860 m3 of helium. Compute its maximum payload at sea level. (Assume the helium and air to be at 0°C and 1 atm.)
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Physics

11/17/22

How much corn oil must the bowl displace in order to float?
A metal bowl with a weight of 1.50 N is placed in a larger kitchen container filled with corn oil. How much corn oil must the bowl displace in order to float? For reference, the mass density... more
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Physics Chemistry

11/17/22

A dog runs 2 kilometers in 10 minutes. What is the dog's speed?
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Physics Chemistry

11/17/22

A train travels 20 miles in 40 minutes. What is the speed of the train?

I don't really understand how to do this
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Physics

11/17/22

the mass M = 1 kg rests on a horizontal plane. Calculate the maximum value of the angle θ0 between the mass m and the vertical axis, that does not produce the displacement of mass M.
the mass M = 1 kg rests on a horizontal plane. The coefficient of static friction relative to the contact between the body and the plane isμs = 0.5. An inextensible wire of negligible mass,... more
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Physics

11/16/22

A ball thrown horizontally at 35 m/s travels a horizontal distance of 59 m before hitting the ground. Air resistance is negligible. From what height was the ball thrown?

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Physics

11/16/22

This is a physics question

A 6.00 kg block rests on a plane with a coefficient of friction of 0.10 and set at a 30-degree angle with respect to the horizontal. It is attached to a rope wrapped around a 4.66 kg drum with a... more
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Physics

11/16/22

Please help , physics question
A car moving at 49 km/h skids 12m with locked breaks. How far will the car skid with locked brakes at 122.5 km/h ? Assume that energy loss is due only to sliding friction. Answer in units of m.
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Physics

11/15/22

Projectile Motion... HELP ASAP!
You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 7 m at your feet, then a horizontal shelf of 5 m , then another drop of 3 m to the bottom of... more
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Physics

11/15/22

Projectile Motion
During World War I, the Germans had a gun called Big Bertha that was used to shell Paris. The shell had an initial speed of 1.75 km/s at an initial inclination of 27◦ to the horizontal. The... more
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Physics

11/15/22

Projectile Motion
You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 7 m at your feet, then a horizontal shelf of 5 m , then another drop of 3 m to the bottom of... more
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Physics

11/15/22

Projectile Motion
A hiker makes four straight-line walks A= 28 km at 77 degrees B= 32 km at 296 degrees C= 24 km at 27 degrees D=19 km at 83 degrees in random directions and lengths starting at position (41 km, 41... more
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Physics

11/15/22

Projectile Motion
During World War I, the Germans had a gun called Big Bertha that was used to shell Paris. The shell had an initial speed of 1.75 km/s at an initial inclination of 27◦ to the horizontal. The... more
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Physics

11/14/22

Should I label the points on best line that I chose when I did slope calculation

When I did my slope calculation I had to pick 2 points on best line. Should I label them ?
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Physics

11/14/22

Projectile Motion
Assume: A 78 g basketball is launched at an angle of 46.7 ◦ and a distance of 18.6 m from the basketball goal. The ball is released at the same height (ten feet) as the basketball goal’s height. A... more
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Physics

11/14/22

Projectile Motion
A man can throw a ball a maximum horizontal distance of 193 m. The acceleration of gravity is 9.8 m/s 2 . How far can he throw the same ball vertically upward with the same initial speed? Answer in... more
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Physics

11/14/22

Deformation of solids

A cast Iron block is used to hold up a beaker of mercury. The face of the block that supports the mercury is 2.5cm2. The blocks length changes by 0.01% (1/10000 the original length). The beaker has... more
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Physics

11/14/22

A car is travelling at 67mph (30m/s) when the driver steps on the brake slowing the car down at a rate of 3m/s2. How long and what distance will be required for the car to stop on dry pavement?
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