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A dart gun vertically launches a 25g dart 50 cm high. Determine the minimum energy stored in the spring when the dart gun was
5 answers
asked by
AnnWarren
4,806 views
mgh=1/2mv^2, solve for the variable v
7 answers
asked by
Lisa
9,953 views
Two radioactive isotopes are extracted from spent nuclear fuel and placed in a metal container, which is then
sealed and
7 answers
asked by
Amanda.
3,388 views
A light string that is attached to a large block of mass 4m passes over a pulley with negligible rotational inertia and is
4 answers
asked by
Mary
4,876 views
You can obtain a rough estimate of the size of a molecule by the following simple experiment. Let a droplet of oil spread out on
3 answers
asked by
Brittany
4,016 views
A 25 degree incline sits on a 1.2 meter high table. a ball rolls off the incline with a velocity of 4 m/s. how far does the ball
4 answers
asked by
Kat
1,184 views
Consider the velocity curve of a one dimensional motion along the x-axis. The initial position is x= 10 m. The scale on the
5 answers
asked by
Ana
1,934 views
A pail of water is rotated in a vertical circle of
radius r = 1.49 m. The acceleration of gravity is 9.8 m/s 2. What is the
4 answers
asked by
Sam
3,085 views
A merry-go-round rotates at the rate of.2rev/s with an 80kg man standing at a point 2m from the axis ofrotation. (A)What is the
4 answers
asked by
Justin
2,206 views
A pole-vaulter approaches the takeoff point at a speed of 9.50 m/s. Assuming that only this speed determines the height to which
3 answers
asked by
Greg
3,343 views
The Eiffel Tower is 300 m tall. When you are standing at a certain place in Paris, it subtends an angle of 7.0°. How far are
3 answers
asked by
-
1,849 views
What is the potential energy of an electron and proton in a hydrogen atom if the distance between them is 5.3*10^-11?
ANSWER
4 answers
asked by
SK
2,734 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
1,429 views
a weather station releases a weather balloon.The balloon's buoyancy accelerates it upward at 15m/s sq.At the same time,a wind
4 answers
asked by
ren
1,823 views
A motorcycle officer hidden at an intersection observes a car driven by an oblivious driver who ignores a stop sign and
1 answer
asked by
Nick
952 views
At their closest approach, Venus and Earth are 4.2x10^10m apart. The mass of Venus is 4.87x10^24kg, the mass of Earth is
4 answers
asked by
Anonymous
2,128 views
You're driving down the highway late one night at 18 m/s when a deer steps onto the road 42 m in front of you. Your reaction
3 answers
asked by
Julia
3,500 views
You are the lead scientist for a criminal investigation unit. Your team has found what might be the gun that caused the
1 answer
asked by
Keshia
505 views
Would it be correct to say that inertia is the reason a moving object continues in motion when no force exists?
I think that is
1 answer
asked by
Julie
498 views
Could you please help me out with the following problems please?
If a rocket initially at rest accelerates at a rate of 50 m/s^2
2 answers
asked by
Cheyanne
586 views
To stop a car, you require first a certain reaction time to begin braking. Then the car slows under the constant braking
5 answers
asked by
Kristen
821 views
A basketball player, standing near the basket to grab a rebound, jumps 62 cm vertically. How much time does the player spend in
2 answers
asked by
Kristen
632 views
A hot air balloon is ascending at the rate of 13 m/s and is 75 m above the ground when a package is dropped over the side. How
1 answer
asked by
Kristen
437 views
Could you please explain to me these problems, I don't understand them.
Do 100 J of work in 50 s and your power output is? A bow
1 answer
asked by
Manny
442 views
An airplane in a horizontal circle at a speed of 130.5556 m/s. If its wings are tilted 40 degress to the horizontal, what is the
2 answers
asked by
Kristen
793 views
Two 10 kilogram boxes are connected by a massless frictionless pulley. The boxes remain st rest with the one on the right
4 answers
asked by
Tim
1,840 views
A record turntable is rotating at 33 and 1/3 rev/min. A watermelon seed is on the turntable 7.5 from the axis of rotation
Calcula
3 answers
asked by
Kristen
1,686 views
A uniform spherical shell of mass M and radius R rotates about a vertical axiss on frictionless bearings. A massless cord passes
4 answers
asked by
Kristen
1,465 views
A flywheel turns through 46 rev as it slows from an angular speed of 3.1 rad/s to a stop.
Assuming a constant angular
3 answers
asked by
ed
706 views
A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The
4 answers
asked by
Darlene
2,165 views
A small solid marble of mass m and radius r will roll without slipping along the loop-the-loop track if it is released from rest
3 answers
asked by
Darlene
1,745 views
Two particles, each of mass m and speed v, travel in opposite directions along parallel lines separated by a distance d.
A)Find
3 answers
asked by
Darlene
678 views
A 1050kg car has four 15kg wheels. When the car is moving, what fraction of the total kinetic energy of the car is due to the
5 answers
asked by
Bernadette
1,124 views
At time t=0, a 2kg particle has position vector r=(5.0m)i+(-8.0m)j relative to the origin. Its velocity just then is given by
4 answers
asked by
Bernadette
990 views
A light string that is attached to a large block of mass 4m passes over a pulley with negligible rotational inertia and is
3 answers
asked by
Mary
1,445 views
A long, straight wire carries a current of 740 mA. A thin metal rod 45 cm long is oriented perpendicular to the wire and moves
1 answer
asked by
Martina
654 views
While two forces act on it, a particle is to move at the constant velocity v = (3 m/s) i - (4 m/s) j. One of the forces is F1 =
2 answers
asked by
J
991 views
A person jumps from the roof of a house 3.0 m high. When he strikes the ground below, he bends his knees so that his torso
6 answers
asked by
Corey
1,075 views
A 239-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 29.0°
3 answers
asked by
Corey
474 views
When traveling a highway in the mountains, you may see elevation signs that read "914 m (3000 ft)". Critics of the metric system
4 answers
asked by
AP Physics
1,017 views
Using what's only in chapter one
The Nature of Science Models, Theories, and Laws Measurement and Uncertainty; Significant
2 answers
asked by
AP Physics
615 views
Again Chapter one Stuff...
Discuss how the notion of symmetry could be used to estimate the number of marbles in a one-liter jar.
2 answers
asked by
AP Physics
1,111 views
I posted questions down below about chapter 1 aparently they were missed.
1 answer
asked by
AP Physics
373 views
can you please explain this to me...
Were given this eqaution x = At^2 + B were A = 2.10 m/s^2 B = 2.80 m ok and this is an
3 answers
asked by
AP Physics
559 views
Hello I was trying to find the proof of the formula
x = x0 + v0t +.5at^2 were the zeros are subscripts My text book dosen't
3 answers
asked by
AP Physics
527 views
hi I need help on this proof
ok I'm tyring to prove that v^2 = v^20 + 2a(x -x0) where the zeros are subscripts ok the first step
3 answers
asked by
AP Physics
398 views
Hello
given that I person 65 kg takes 4.5 s to climb a flight of stairs that is 5.5 m my question is well I was asked to solve
5 answers
asked by
AP Physics
491 views
I'm trying to derive the formula
v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the
3 answers
asked by
AP Physics
2,435 views
In order to pass a physical education class at a university, a student must run 1.0 mi in 12 min. After running for 10 min, she
4 answers
asked by
nicky
1,176 views
A glider on an air track carries a flag of length through a stationary photogate that measures the time interval td during which
3 answers
asked by
nicky
1,145 views
While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 250 m east, 210 m at
4 answers
asked by
Annamaria
571 views
Hi, please help me solve these questions for my class. I have so much homework
A car traveling at 17 m/s accelerates at 3.3 m/s2
1 answer
asked by
Leslie
642 views
A rope is tied to a pail of water and the pail is swung in a vertical circle of radius 1.3m. What must be the minimum velocity
2 answers
asked by
Henry
669 views
A girl is whirling a ball on a string around her head in a horizontal plane. She wants to let go at precisely the right time so
4 answers
asked by
Henry
4,629 views
This question had been asked for many times and I've read the solution and did it myself.
Tom the cat is chasing Jerry the mouse
2 answers
asked by
Anonymous
522 views
Will an object weigh more at the equator or at the poles? What two effects are at work and do these effects oppose each other?
3 answers
asked by
Henry
1,290 views
A child on a sled starts from rest at the top of a hill and slides down. Does the velocity at the bottom depend on the angle of
4 answers
asked by
Henry
1,725 views
A skier is accelerating down a 30.0° hill at a = 2.60m/s/s.
(a) What is the vertical component of her acceleration? (b) How long
2 answers
asked by
Juli
523 views
At an accident scene on a level road, investigators measure a car's skid mark to be 98 m long. It was a rainy day and the
2 answers
asked by
Breana
635 views
your doctor's scale has arms on which weights slide to counter your weight. these weights are much lighter than you are. explain
2 answers
asked by
clay
1,035 views
Hi, I have the follwoing physics question to ask, Plesae help with hints.
"Two people are standing on a 2.5-m-long platform, one
1 answer
asked by
Indi
742 views
A Physics book has a height of 26 cm, a width of 22 cm, and a thickness of 4 cm.
Find the pressure that the Physics book exerts
3 answers
asked by
JL
1,589 views
In a period of 2s, 4.8E23 nitrogen molecules strike a wall area of 8.6 cm^2.
If the molecules move at 308 m/s and strike the wall
2 answers
asked by
JL
515 views
A student found an unknown substance. In an effort to identify the thermal properties of the substance, she isolated a specimen
3 answers
asked by
Sasami
667 views
You go to kitchen to boil water. You pour 280 gram of water to a container, and put the container on a 293 W electric heater.
3 answers
asked by
Sasami
632 views
Assume that at sea-level the air pressure is 1.0 atm and the air density is 1.3 kg/m3.
(a) What would be the height of the
2 answers
asked by
Brian
1,141 views
Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book.
A person weighs 723N in
2 answers
asked by
Danny
497 views
A Honda Civic and Lincoln Town Car are initially at rest on a horizontal parking lot at the edge of steep cliff. The Town Car
2 answers
asked by
Hannah
1,199 views
A cord runs around two massless, frictionless pulleys; a canister with mass m=20 kg hangs from one pulley; and you exert a force
2 answers
asked by
Mikaela
1,212 views
Monochromatic light falls on two very narrow slits 0.050 mm apart. Successive fringes on a screen 4.60 m away are 5.7 cm apart
2 answers
asked by
Sally
1,072 views
Monochromatic light falls on two very narrow slits 0.050 mm apart. Successive fringes on a screen 4.60 m away are 5.7 cm apart
3 answers
asked by
Sally
780 views
Bobby, a 100 kg football player has a fever of 29 degrees C. What mass of water must evaporate from his body to cool him to 27
1 answer
asked by
Smarty Pants
450 views
K=1/2(6.6 x 10^2 kg)(2.11 x 10^4 m/s)^2
1 answer
asked by
Lisa
323 views
K=1/2kx^2 solve for the variable x
1 answer
asked by
Lisa
465 views
qV=1/2mv^2, solve for the variable v
1 answer
asked by
Lisa
1,235 views
(1.33)sin25.0=(1.50)sinO
1 answer
asked by
Lisa
343 views
the radius of a circle is 5.5cm, what is the circumference in meters?
9 answers
asked by
Lisa
659 views
A bicyclist pedaled at 10 m/s (meters per second) in 20 seconds. What distance was traveled?
7 answers
asked by
Ranma
409 views
A rock thrown straight up with a velocity of
30 m/s from the edge of a building just misses the building as it comes down. The
3 answers
asked by
Alex
1,642 views
An experimental rocket car starting from rest reaches a speed of 600 km/h after a straight 370 m run on a level salt flat.
2 answers
asked by
Ayana
536 views
A woman at an airport is towing her 17.0 kg suitcase at constant speed by pulling on the strap at an angle of θ above the
1 answer
asked by
Frank
639 views
A 2.8 kg mass hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right,
3 answers
asked by
Frank
1,148 views
A marble is dropped from a height of 10 m. A 2nd marble is rolled off a 10 m table at 5 m/s. A 3rd marble is fired at 5 m/s at
1 answer
asked by
Betsy
342 views
An object has a mass of 80 kg on earth. the acceleration of gravity on Mars is about 1/4 of the acceleration of gravity on
1 answer
asked by
Betsy
454 views
A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First,
1 answer
asked by
PLEASE HELP
494 views
A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First,
4 answers
asked by
AP Physics
1,024 views
A stone is tied to a string (length = 0.450 m) and whirled in a circle at the same constant speed in two different ways. First,
1 answer
asked by
PLEASE HELP
618 views
a 45 kg object slides down an uneven frictionless incline from rest without rotating. What is its speed after it travels 2.5
3 answers
asked by
Asim
645 views
A bucket full of water (15kg) is swung in a vertical circle on a rope 1.5m long. What is the minimum speed it can be swung so
2 answers
asked by
Anonymous
471 views
A 3kg object initially moving in the positive x-direction with a velocity of +5m/s collides with and sticks to a 2kg object
2 answers
asked by
Anonymous
1,173 views
A husband and wife take turns pulling their child in a wagon along a horizontal sidewalk. Each exerts a constant force and pulls
4 answers
asked by
Abagail
2,875 views
A 60.0 kg skier rides a 2860 m long lift to the top of a mountain. The lift makes an angle of 14.1° with the horizontal. What
1 answer
asked by
Amy
451 views
An 18.0 kg box is released on a 35.0° incline and accelerates down the incline at 0.269 m/s2. Find the friction force impeding
1 answer
asked by
maddy
465 views
Jean, who likes physics experiments, dangles her watch from a thin piece of string while the jetliner she is in takes off from
3 answers
asked by
maddy
1,149 views
A basketball player makes a jump shot. The 0.700-kg ball is released at a height of 2.00 m above the floor with a speed of 7.70
3 answers
asked by
Sierra
667 views
Find the scalar product of the vectors in Figure P7.8, where è = 117° and F = 31.0 N.
y | | ___| Unk Angle----> / |
3 answers
asked by
Sierra
1,157 views
Hi! Thank you very much-- I know this is a 2dimensional inelastic collision but i'm not sure how to solve--
"The mass of a blue
1 answer
asked by
APpreciative student
455 views
there are two vectors in quadrant three
one with a magnitude of 31.0N and has a direction of 117degrees in the negative direction
2 answers
asked by
Sierra
531 views
A cylindrical container of radius 20 cm contains water of height of 3 m. Two meters down from the water level there is a hole of
1 answer
asked by
Charlie
462 views
A ladder of unknown length and mass of 29 kg rests on a rough floor, and leans against a rough wall. The coefficient of static
4 answers
asked by
Mary
685 views
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