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AP Physics
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A cowboy at a dude ranch fills a horse trough that is 1.7 m long, 50 cm wide, and 40 cm deep. He uses a 1.9 cm diameter hose
2 answers
asked by
Alex
1,170 views
A rock, which weighs 350 lb in air, weighs 226 lb when submerged in fresh
water (62.4 lb/ft3). The volume of the rock is:
2 answers
asked by
Tony
584 views
The surface of the sun has a temperature of about 6.0 103 K. This hot gas contains hydrogen atoms (m = 1.67 10-27 kg). Find the
2 answers
asked by
Kieran
729 views
A young male adult takes in about 4.0 10-4 m3 of fresh air during a normal breath. Fresh air contains approximately 21% oxygen.
3 answers
asked by
Cheyenne
1,543 views
A ball of mass 0.1 kg is attached to a rubber band, which we can model as a spring of stiffness 8 N/m. With one end of the
3 answers
asked by
Anonymous
791 views
A transverse wave is traveling with a speed of 500 m/s on a horizontal string. If the tension in the string is increased by a
1 answer
asked by
James
400 views
At a height of 5 meters above the surface of a freshwater lake, a sound pulse is generated. The echo from the bottom of the lake
2 answers
asked by
Alan
549 views
The fundamental frequency of a string fixed at both ends is 388 Hz. How long does it take for a wave to travel the length of
1 answer
asked by
Jackie
431 views
6.
a)A 1260 kg car accelerates uniformly from rest to 4.65 m/s in 2.6 s. Find the work done on the car in this time.Answer in
1 answer
asked by
jeff
419 views
15.
A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0�
4 answers
asked by
jeff
2,273 views
A student weighing 700 N climbs at constant
speed to the top of an 8 m vertical rope in 10 s. The average power expended by the
3 answers
asked by
jeff
1,079 views
22.
a)You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon
2 answers
asked by
jeff
959 views
27.
a)In the 1950’s, an experimental train that had a mass of 32800 kg was powered across a level track by a jet engine that
3 answers
asked by
jeff
537 views
The initial kinetic energy imparted to a 0.72 kg bullet is 1777 J.The acceleration of gravity is 9.81 m/s2. Neglecting air
2 answers
asked by
jeff
520 views
A car slows down from 18 m/s to rest in a distance of 91 m. What was its acceleration, assumed constant?
3 answers
asked by
Lucas
1,204 views
A Young's double slit has a slit separation of 2.50x10 raised to the -5th power m on which a monochromatic light beam is
1 answer
asked by
Sydney
754 views
A person on a trampoline bounces straight upward with an initial speed of 4.7m/s . What is the magnitude of the person's speed
4 answers
asked by
Vova
3,229 views
A person on a trampoline bounces straight upward with an initial speed of 4.7m/s . What is the magnitude of the person's speed
2 answers
asked by
Vova
506 views
A person on a trampoline bounces straight upward with an initial speed of 4.7m/s . What is the magnitude of the person's speed
2 answers
asked by
Vova
487 views
A novice golfer on the green takes three strokes to sink the ball. The successive displacements are 3.80 m to the north, 1.90 m
4 answers
asked by
Lola
914 views
A soccer ball is kicked with an initial speed of 19.6 m/s in a direction 23.0° above the horizontal. Find the magnitude and
1 answer
asked by
Jamila
620 views
you travel down the highways, starting from rest. You travel for 2 hours at a speed of 105 km/h. then you stop and eat your
1 answer
asked by
Anonymous
488 views
1. A car is traveling down the road at a constant speed of 11 km/h. At time zero it is forced to stop. The driver slams on the
1 answer
asked by
ThinkPink
924 views
A driver in a car traveling at a speed of
62 mi/h sees a deer 112 m away on the road. Calculate the magnitude of the acceleration
2 answers
asked by
Margo
535 views
Light passes from air into water at an angle of
incidence of 33.5�.degrees Find the angle of refraction in the water. Answer in
2 answers
asked by
Melvin
699 views
a ball of mass 3 kg is moving with a velocity of 10 m/s. This ball collides with a second ball of mass 0.5 kg that is at rest.
3 answers
asked by
Kailyn
618 views
a ball of mass 3 kg is moving with a velocity of 10 m/s. This ball collides with a second ball of mass 0.5 kg that is at rest.
1 answer
asked by
Kailyn
438 views
Liam fires a bullet into a block suspended by two cables, embedding the bullet in the block. The mass of the bullet is 5g and
2 answers
asked by
Hester
985 views
Three blocks of masses 8.2 kg, 5.88 kg, and
2.19 kg are connected by light strings that pass over frictionless pulleys as shown
2 answers
asked by
.
609 views
Consider the vectors A = 2.00 i + 7.00 j and B = 3.00 i - 2.00 j.
(a) Sketch the vector sum C = A + B and the vector subtraction
5 answers
asked by
Paige
751 views
A quarterback throws the football to a stationary receiver who is 15.2 m down the field.
The football is thrown at an initial
4 answers
asked by
Noah
824 views
The volume of liquid flowing per second is called the volume flow rate "Q" and has the dimensions of [L]^3/[T]. The flow rate of
3 answers
asked by
Amanda
2,357 views
A baseball is thrown at an angle of 25 ◦ relative to the ground at a speed of 27.6 m/s. The ball is caught 59.4844 m from the
3 answers
asked by
Noah
2,605 views
A ball is thrown horizontally from the top of
a building 51 m high. The ball strikes the ground at a point 120 m from the base of
1 answer
asked by
Noah
438 views
A parachutist with a camera, both descending at a speed of 9.2 m/s, releases the camera
at an altitude of 32.3 m. What is the
2 answers
asked by
Noah
854 views
A home run is hit such a way that the baseball
just clears a wall 30 m high located 114 m from home plate. The ball is hit at an
1 answer
asked by
Noah
624 views
A monkey is hanging from a branch located exactly 24 meters along the ground from the hunter. The monkey is 14 meters above the
1 answer
asked by
Tom
667 views
A hot air balloon containing an AP Physics student ascends vertically at a constant speed of 8 m/s. While ascending, he
1 answer
asked by
raj
445 views
Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at
2 answers
asked by
Soph
599 views
If a ball rolls off a 4m high table at 7 m/s, how far horizontally from the bottom edge of the table will it fall?
1 answer
asked by
Michaela
370 views
A bullet of mass 0.0022 kg moving at 568 m/s
impacts a large fixed block of wood and travels 5.2 cm before coming to rest.
1 answer
asked by
Noah
1,087 views
A frictionless plane is 13.1 m long and inclined at 39.8 deg;. A sled starts at the bottom with an initial speed of 4.99 m/s up
2 answers
asked by
Elise Brown
616 views
A 45 kg gymnast steps off a platform located 1.3 m above a spring board. The spring board compresses 25 cm. a)What is the spring
4 answers
asked by
Anna
1,442 views
To test the performance of its tires, a car
travels along a perfectly flat (no banking) circular track of radius 120 m. The car
4 answers
asked by
Noah
5,447 views
A 1200 kg car is moving at 33 m/s then has the brakes applied at a deceleration of 6.1 m/s. How far will it move before
1 answer
asked by
Alexis
332 views
A curve in a road is banked. There is a car on the curve. What is the component of its weight parallel to the incline? The
2 answers
asked by
Noah
455 views
A flagpole is to be installed on the front of an office building as shown below. The pole
itself weighs 150 N and is 2 meters
1 answer
asked by
Shadman
483 views
Momentum
One of those Civil War cannons is fired. The Cannon has a mass of 873kg It fires a 35.0kg cannon ball at a velocity of
2 answers
asked by
Daisy
1,257 views
So my question is about projectile motion. We just learned in class about the equation for finding the range: R=v^2sin(2theta)/g
2 answers
asked by
Sydney
726 views
Two particles, each of mass m and speed v, travel in opposite directions along parallel lines separated by a distance d.
(a) Find
2 answers
asked by
Anonymous
545 views
A small block with mass 0.035 kg slides in a vertical circle of radius 0.425 m on the inside of a circular track. During one of
1 answer
asked by
Hannah
754 views
I need someone to review the following questions for my summer assignment and tell me if my answers are right or wrong. Please
6 answers
asked by
scrupulous
877 views
#2
A spy stands on the sidewalk by an apartment building examining a foreign embassy across the street. The spy then climbs 30 m
3 answers
asked by
dilated
508 views
A 67.0 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force
3 answers
asked by
John
645 views
A 67.0 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force
3 answers
asked by
John
673 views
If you are driving 116 km/h along a straight road and you look to the side for 1.0 s, how far do you travel during this
1 answer
asked by
Giulianna
384 views
A particle at t1 = -1.4 s is at x1 = 3.6 cm and at t2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity?
2 answers
asked by
Giulianna
836 views
A horse canters away from its trainer in a straight line, moving 100 m away in 19.0 s. It then turns abruptly and gallops
1 answer
asked by
Giulianna
485 views
A jogger runs in a straight line with an average velocity of 7.7 m/s for 4.5 minutes, and then with an average velocity of 2.8
3 answers
asked by
Wendy
1,431 views
A car traveling 92 km/h is 130 m behind a truck traveling 75 km/h. How long will it take the car to reach the truck?
3 answers
asked by
veronica
661 views
Two locomotives approach each other on parallel tracks. Each has a speed of v = 85 km/h with respect to the ground. If they are
2 answers
asked by
veronica
629 views
A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound
2 answers
asked by
Max
782 views
An ice skater skates 28 m southwest, then
56 m east, and finally 84 m in a direction 50.3 ◦ north of east.Find the magnitude of
3 answers
asked by
josselin
940 views
A drag racer starts from rest and accelerates uniformly for 5s covering a distance of 120 m.
a. what is the car's acceleration? I
1 answer
asked by
ANO.
605 views
A block of mass 80.4 kg is sliding on a ramp. The angle of elevation of the ramp is 45 degrees. The coefficient of friction is
1 answer
asked by
Tanya
444 views
A person stands in a stationary canoe and throws a 5.16-kg stone with a velocity of 7.75 m/s at an angle of 31.5° above the
1 answer
asked by
Kylie
734 views
The lead female character in the movie Diamonds Are Forever is standing at the edge of an offshore oil rig. As she fires the
2 answers
asked by
Kylie
533 views
Two people are standing on a 2.2-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of
1 answer
asked by
Kylie
962 views
A honeybee with a mass of 0.175 g lands on one end of a popsicle stick (Active Example 9-2). After sitting at rest for a moment,
2 answers
asked by
Kylie
539 views
A ball has an initial velocity of 3 m/s. If there is no friction, what is the highest it could roll?
What would the qualitative
4 answers
asked by
AnnWarren
3,346 views
A racing car travels on a circular track of radius 220 m, moving with a constant linear speed of 48.9 m/s.
Find its angular
2 answers
asked by
Andrew
526 views
The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision.
1 answer
asked by
Alexis
384 views
The white ball in the figure has a speed of 1.67 m/s and the yellow ball is at rest prior to an elastic glancing collision.
1 answer
asked by
Alexis
452 views
A 70 kg man stands at the back of a 3.0 meter long boat that has mass 2X kg. The front of the boat is
touching a dock. The man
2 answers
asked by
Burrito
509 views
Two adjacent natural frequencies of an organ pipe are found to be 900 Hz and 990 Hz.
(a) Calculate the fundamental frequency and
1 answer
asked by
Ayesha
814 views
A passenger train is traveling at 27 m/s when the engineer sees a freight train 345 m ahead of his train traveling in the same
2 answers
asked by
Nick
739 views
A bridge 30 m long crosses a chasm. If the bridge is inclined at angle of 20 degrees to the horizontal, what is the difference
2 answers
asked by
H
992 views
An alien planet has g = 2.2 m/s2. If a ball is thrown upward from a tower 4.0 m above the surface of the planet at an initial
1 answer
asked by
Turner
350 views
A baseball player throwing the ball from the outfield usually allows it to take one bounce on the theory that the ball arrives
1 answer
asked by
Rachel
622 views
A car enters the freeway with a speed of 6.9 m/s and accelerates uniformly for 2.7 km in 3,7 min. How fast is the car moving
1 answer
asked by
Natasha
429 views
A car enters the freeway with a speed of 6.9 m/s and accelerates uniformly for 2.7 km in 3,7 min. How fast is the car moving
1 answer
asked by
Natasha
374 views
Question Part
Points Submissions Used The drawing below shows a person who, starting from rest at the top of a cliff, swings down
1 answer
asked by
Anonymous
742 views
You are standing at the top of a cliff that has
a stairstep configuration. There is a vertical drop of 6 m at your feet, then a
2 answers
asked by
MJay
530 views
Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the
3 answers
asked by
Brianna
1,456 views
A ball is kicked 30º above the horizontal with an initial velocity of 20m/s. A fence 2.3 meters high is located 32 meters away.
3 answers
asked by
Jessica
568 views
A 35kg child sits in a swing supported by 2 chains, each 3.7 m long. If the tension in each chain at the lowest point is 274 N
1 answer
asked by
Chevy
854 views
A car traveling in a straight line has a velocity
of 3.24 m/s at some instant. After 3.28 s, its velocity is 8.18 m/s. What is
1 answer
asked by
JB
427 views
A mystery surprise box is sliding down a ramp at a constant speed. The box has a mass of 55.0kg and the ramp makes a 40.0œ
2 answers
asked by
Anna
517 views
A large box has a mass of 500kg and the coefficient of static friction for the box and the floor is 0.45, and the coefficient of
2 answers
asked by
Anna
572 views
A car does 8.0 ✕ 104 J of work in traveling 2.7 km at constant speed. What was the average retarding force (from all sources)
4 answers
asked by
-
924 views
What is the minimum work needed to push a 1025 kg car 290 m up a 17.5° incline with zero friction?
2 answers
asked by
-
557 views
A 5.86 kg block initially at rest is pulled to the
right along a horizontal surface by a constant, horizontal force of 14.4 N.
2 answers
asked by
Robert
739 views
A fire engine must lift 30 kg of water a vertical distance of 20 m each second. What is the amount of power needed for the water
2 answers
asked by
Collins
614 views
How fast (in rpm) must a centrifuge rotate if a particle 6.0 cm from the axis of rotation is to experience an acceleration of
2 answers
asked by
-
857 views
A centrifuge rotor rotating at 12000 rpm is shut off and is eventually brought to rest by a frictional torque of 1.50 m·N. If
3 answers
asked by
-
1,474 views
A horizontal force of 160 N is used to push a
49.0 kg packing crate a distance of 7.00 m on a rough horizontal surface. The
1 answer
asked by
lili
479 views
Two speakers, one directly behind the other, are each generating a 406-Hz sound wave. What is the smallest separation distance
4 answers
asked by
Kevin
2,091 views
Two identical, small balls are suspended by separate 0.25m threads that are attached to a common point on the ceiling. Each ball
6 answers
asked by
samantha
1,600 views
Point A is 2.0 meters away from a charge of -3.o(Mu) and 3.0 meters away from a charge of +1.5(Mu) as shown.
A) Find the net
3 answers
asked by
samantha
393 views
An electric furnace runs nine hours a day to heat a house in January (31 days). The heating element has a resistance of 10.6
3 answers
asked by
samantha
1,198 views
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