12,762 Answered Questions for the topic physics

11/25/22

please help with physics problem
A 530 lines/mm diffraction grating is illuminated by light of wavelength 540 nm. How many bright fringes are seen on a 3.5- m -wide screen located 2.2 m behind the grating?Please help
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Physics

11/24/22

by what fraction would the diameter of the moon appear shortened to an observer in a rocketship travelling at a speed of 300km/sec with respect to the moon
by what fraction would the diameter of the moon appear shortened to an observer in a rocketship travelling at a speed of 300km/sec with respect to the moon
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Physics Math Chemistry

11/24/22

What volume of 0.410 M KOH is needed to react completely with 23.3 mL of 0.280 M H2SO4 ?
The balanced equation for the neutralization reaction of aqueous H2SO4H2⁢SO4 with aqueous KOHKOH is shown.H2SO4(aq)+2KOH(aq)⟶2H2O(l)+K2SO4(aq)
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Physics

11/24/22

Physics (Collision) help pls

What are th velocities of snowball and man if the collision is elastic.
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Physics

11/24/22

momentum & impulse (help pls)
1500-kg car moving at 30km/h, find the final velocities of the 2 cars. if the collision is elastic.
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Physics Math Science

11/23/22

What is the total mass (in kg) of water vapor in the air in the apartment?
An apartment has the dimensions 19 m by 10 m by 6 m. The temperature is 20°C, and the relative humidity is 50 percent. What is the total mass (in kg) of water vapor in the air in the apartment?
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Physics Math Science

11/23/22

At what temperature would the wing
An aluminum wing on a passenger jet is 26 m long when its temperature is 21°C. At what temperature would the wing be 6 cm (0.06 m) shorter?
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Physics

11/23/22

engine efficiency
As a gasoline engine is running, an amount of gasoline containing 9,900 J of chemical potential energy is burned in 1 s. During that second, the engine does 3,300 J of work.(a)What is the engine's... more
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Physics

11/23/22

By how much would the machinist have to lower the temperature (in °C) of the rod to make it fit the hole?
A machinist wishes to insert an iron rod with a diameter of 4 mm into a hole with a diameter of 3.994 mm. By how much would the machinist have to lower the temperature (in °C) of the rod to make it... more
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11/22/22

help needed with math problem
Find the absolute maximum and minimum values of f on the set D. f(x, y) = 2x3 + y4 + 2  D = (x, y) | x2 + y2 ≤ 1 I'm stuck on this problem. The answers are the absolute max value is 4 and the... more
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Physics

11/22/22

Projectile Motion
The speed of an arrow fired from a compound bow is about 88 m/s. An archer sits astride his horse and launches an arrow into the air, elevating the bow at an angle of 38◦ above the horizontal and... more
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Physics

11/22/22

Projectile Motion
A golfer is enjoying a day out on the links. What maximum height will a 325.4 m drive reach if it is launched at an angle of 20.0 ◦ to the ground? The acceleration due to gravity is 9.81 m/s 2 .... more
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Physics

11/21/22

Projectile motion problem
A shot-putter throws the shot mass=7.3kg with an initial speed of 14.4m/s at angle 34 degrees with horizontal.Calculate the horizontal distance travelled by the shot if it is leaves the athlete's... more
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Physics

11/21/22

The front 1.20 m of a 1400 - kg car is designed as a “crumple zone” that collapses to absorb the shock of a collision. If a car traveling 25.0 m/s stops u niformly in 1.20 m
(a) how long does the collision last, (b) what is the magnitude of the average force on the car, and (c) what is the magnitude of the acceleration of the car? Express the acceleration as a multiple... more
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Physics

11/21/22

A daredevil is shot out of a cannon at 44.0 ◦ to the horizontal with an initial speed of 29.1 m/s.

A net is positioned at a horizontal distance of 47.7 m from the cannon from which the daredevil is shot. The acceleration of gravity is 9.81 m/s 2 . At what height above the cannon’s mouth should... more
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Physics

11/21/22

A golfer is enjoying a day out on the links.

What maximum height will a 334.5 m drive reach if it is launched at an angle of 18.0 ◦ to the ground? The acceleration due to gravity is 9.81 m/s 2 . Answer in units of m
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Physics

11/21/22

PROJECTILE MOTION! HELP ASAP!
A 0.66 kg projectile is fired into the air from the top of a 14.5 m cliff above a valley. Its initial velocity is 6.99 m/s at 48◦ above the horizontal. How long is the projectile in the air? The... more
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Physics

11/21/22

HELP ME WITH PROJECTILE MOTION ASAP!
The speed of an arrow fired from a compound bow is about 12 m/s. An archer sits astride his horse and launches an arrow into the air, elevating the bow at an angle of 54◦ above the horizontal and 3... more
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Physics

11/21/22

PROJECTILE MOTION! HELP ASAP
You drop a stone from a position of rest. How far will it fall vertically in the first 9 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m.If you instead toss it horizontally at... more
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Physics

11/21/22

PROJECTILE MOTION HELP ASAP!!!
A 0.25 kg projectile is fired into the air from the top of a 7.4 m cliff above a valley. Its initial velocity is 12.4 m/s at 50◦ above the horizontal. How long is the projectile in the air? The... more
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Physics

11/21/22

HELP ASAP! PROJECTILE MOTION!
A toy car runs off the edge of a table that is 1.13 m high. The car lands 0.4768 m from the base of the table. How long does it take for the car to fall? The acceleration due to gravity is 9.8 m/s... more
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Physics

11/21/22

Density of a rectangular block and it's maximum possible error
The dimensions of a rectangular glass block are length L=46.23±0.01cm, breath w=3.14±0.02cm and the thickness t=2.015±0.005.If the mass of the block is 40.200±0.006g calculate the density and it's... more
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Physics

11/20/22

A basketball player jumps straight upward, leaving the ground with an upward initial velocity. In terms of the given information and universal constants, what is the player's vertical jump?
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Physics

11/20/22

A projectile is fired horizontally with velocity vx at an altitude h. After hitting the ground, the projectile's net displacement in the horizontal direction is what?
AP Physics Unit 2 Vectors and Projectiles
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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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