Monday
September 26, 2016

Homework Help: Science: Physics

Recent Homework Questions About Physics

Physics/math
How do you convert 50.4 mi/h to m/s? 1 mi = 1609 m. Please explain it to me because I don't get it
Monday, September 26, 2016 by JIna

Physics
A 2.83-kg object is thrown vertically upward from the surface of Mars, where the acceleration due to gravity is g1 = 3.71 m/s2. The initial velocity is v1, and the object reaches a maximum height of y1. What is the maximum height, y2, if the object is thrown with a speed of v2...
Monday, September 26, 2016 by Morgan

Physics
On the Moon, the acceleration due to gravity is 1.62 m/s2. How far would a 13 g rock fall from rest in 5.5 seconds if the only force acting on it was the gravitational force due to the Moon?
Monday, September 26, 2016 by Morgan

Physics
While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 6.11 m/s. The stone subsequently falls to the ground, which is 12.7 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How ...
Monday, September 26, 2016 by Morgan

physics
a ball is thrown upward from a bridge with a speed of 48 ft/s. It misses the bridge on way down and lands in water 160 ft. below. Find how long the ball rises, how high it goes, how long it is in the air, and its velocity when it strikes the water.
Monday, September 26, 2016 by mia

physics
a child and a bicycle have a mass of 45kg together. The child rides the bicycle 1800m in 10 min at a constant speed. what is the kinetic energy of the system?
Monday, September 26, 2016 by kled

physics
a 200kg body raised to a height of 10m. what is the gravitational potential energy of the system?
Monday, September 26, 2016 by kled

physics
calculate the energy content of a. a 16000lb elevator at a height of 100ft b. a 200kg horse moving at 10m/s c. a gram of nuclear fuel containing 20pg of mass convertible to E.
Monday, September 26, 2016 by kled

physics
a 15kg rock falls from the top of a building 8.0m high. Find its PE and KE a.when at rest at the top of the building b. halfway down the ground c. when it reaches the ground d.speed when it reaches the ground
Monday, September 26, 2016 by kled

physics
a man pushes a lawnmower 50ft in 5s by exerting a force of 30lb at an angle of 53degrees with the horizon. find the work done and the average power expended in horsepower.
Monday, September 26, 2016 by kled

physics
We have a charge q = -0.6 x 10^-6 C at origin. And a vector r = (0 m, -5 m, 0 m). Find the electric field E(r) as a vector expressed in terms of i j and k. Ok so far I got E(r) = k (0.6e-6)/(5)^2 = 216 N/C. But this is not a vector, how do I express this in terms of I j and K?
Monday, September 26, 2016 by Stephanie

Physics
You are trying to climb a castle wall so, from the ground, you throw a hook with a rope attached to it at 22.3 m/s at an angle of 55.0° above the horizontal. If it hits the top of the wall at a speed of 15.4 m/s, how high is the wall?
Monday, September 26, 2016 by Justine

Physics
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.40 m/s and Luna runs at a speed of 1.60 m/s. If Chloe jumps at an angle of 22.0° while still running toward Luna, at what distance from Luna should Chloe ...
Monday, September 26, 2016 by Justine

physics
A car travelling along the road at 8 m/s.it accelerates at 1m/s square fir a distance of 18 km.how fast is it then travelling
Monday, September 26, 2016 by vishu

physics
a 15kg rock falls from the top of a building 8.0 high. Find its PE and KE a.when at rest at the top of the building b. halfway down the ground c. when it reaches the ground d.speed when it reaches the ground
Monday, September 26, 2016 by k

physics
a man pushes a lawnmower 50ft in 5s by exerting a force of 30lb at an angle of 53degrees with the horizon. find the work done and the average power expended in horsepower. Answer Please need help
Monday, September 26, 2016 by k

physics
a man lifts a 2 kg load to a height of 3m in 3 seconds. how much work was done ? how much power was demonstrated?
Monday, September 26, 2016 by khaled

Physics continued
Sorry, I didn't see that there was a second part to the question. What is the difference between this one and the previous question I posted? The x and y components of a certain force are measured and found to be Fx = 68 ± 3N and Fy = 42 ± 2 N, respectively. ...
Monday, September 26, 2016 by Timothy

physics
What equation do I use to find this? Thanks The x and y components of a certain force are measured and found to be Fx = 68 ± 3N and Fy = 42 ± 2 N, respectively. Calculate the error associated with the magnitude of this force?
Monday, September 26, 2016 by Timothy

Physics
Please help me with this its very hard to visualize the problem. The analytical method of adding vectors expressed in terms of their components may be applied to vectors in three dimensions, for which graphical work is inconvenient. Find the magnitude of the resultant of the ...
Monday, September 26, 2016 by Donna

Physics
I am given the x and y components of a force and it is asking me to calculate the direction of this force or find the angle in degrees with respect to the y-axis. How do I go about doing this? Thank you in advance.
Monday, September 26, 2016 by Donna

Physics
A science student is riding on a flatcar of a train along a strait, horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path he judges to make an initial angle 65. deg with the horizontal and to be in line with the track. The ...
Sunday, September 25, 2016 by Mary

Physics
To give a 19-kg child a ride, two teenagers pull on a 3.8-kg sled with ropes, as indicated in the figure . Both teenagers pull with a force of 55 N at an angle of 35 ∘ relative to the forward direction, which is the direction of motion. In addition, the snow exerts a ...
Sunday, September 25, 2016 by jonge

Physics
1. A dog sits under the only shade tree in its territory. Suddenly the dog desires to dig a previously buried bone. From the tree the dog goes 13 meters at 22.6° north of east. Not finding the bone there the dog then goes 17 meters at 61.9° north of west. Digging at ...
Sunday, September 25, 2016 by Isabel

physics
a student weighing 160 pounds hangs for dear life from a cable tied to two other cables fastened to a support as shown above. the upper cables make angles of 39 and 55 with the horizontal. these upper cables are not as strong as the vertical cable and will break if the tension...
Sunday, September 25, 2016 by Anonymous

Physics
A batted baseball leaves the bat with a velocity of 41.4 m/s at an angle of 51.2°. If the ball just barely clears the 3.05 m (10 ft) center field wall, a. How long was the ball in the air? ___s b. What must the range be from home plate to the center field wall? ___m c. How...
Sunday, September 25, 2016 by Eric

Physics
An object of mass m1= 2.90 kg placed ona. Frictionless, horizontal table is connected to a string that passes over a pulley and then is fastened to a hanging object of mass m2= 8.70 kg. Draw free- body diagrams of both objects. I've seen many people have a similar topic to...
Sunday, September 25, 2016 by Keef sosa

physics
part a of the drawing shows a bucket of water suspended from the pulley of the well; the tension in the roof is 92N. part b shows the same bucket of water being pulled up from the well at a constant velocity. what is the tension in the rope in part b?
Sunday, September 25, 2016 by aljhun

Physics
You push a skateboard so that it rolls down the road at a speed of 0.600 m/s. You run after the skateboard at a speed of 3.50 m/s and while still behind the skateboard you jump off the ground at an angle of 22.0° above the horizontal hoping to land on the skateboard. How ...
Sunday, September 25, 2016 by Jim

Physics
You are on a new planet and want to know the acceleration due to gravity. You take a ball and kick it at an angle of 26.0° at a speed of 21.0 m/s. If the ball is in the air for 7.30 s, what is the magnitude of the acceleration due to gravity?
Sunday, September 25, 2016 by Fred

Physics
A 1.00 kg box, initially at rest, is pulled across a table with a force of 3.00 N. (a) Will the box move if the coefficient of friction is 0.45? (b) What is the coefficient of friction if the box just begins to move? (c) What is the acceleration of the box if the coefficient ...
Sunday, September 25, 2016 by Lorenzo

Physics
Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a frictionless, massless pulley...
Sunday, September 25, 2016 by Plase help soon

physics steve or damon help!!!!
SIG FIGS. how many sig figs in 6:70. hOW TO FIND SIG FIGS IN TIMe.
Sunday, September 25, 2016 by brahtherfrmanothermather

Physics
Judy walks a certain distance due north, then walks twice as far due west. At the end of her trip, the straight-line distance from her starting point to her final position is 112m. a) What is the length of each leg of the trip? b) What is the direction of her total ...
Sunday, September 25, 2016 by Anonymous

Physics
An airplane, traveling 142.5 km/hr at the moment it touches the runway, runs off the end of the runway still traveling at 36.7 km/hr. If the plane’s rate of deceleration was -1.6 m/s2, how long and how far did the plane travel along the runway?
Sunday, September 25, 2016 by Michelle

Physics
A deer runs into the road 1.24 km in front of a car. The driver, traveling at 70.5 km/hr, sees the deer and slams on the brakes which decelerates the car at a rate of 3.2 x 10-1 m/s2. Will the driver hit the deer?
Sunday, September 25, 2016 by Michelle

Physics
A ball is thrown straight down with a velocity of 12 m/s; what will be its velocity 2.0 s after being released? Please help me solve this!!
Sunday, September 25, 2016 by Student

Physics
Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a frictionless, massless pulley...
Sunday, September 25, 2016 by Josh

Physics
A train travelling at a constant speed of 100 km/h travels west for 45 minutes, northwest for 30 minutes and finally north for 15 minutes. What is the trains average velocity for the trip?
Sunday, September 25, 2016 by Instantaneous

Physics
Ximena stands near the edge of a cliff 20 m above her friend Javier. If she throws a sandwich to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the sandwich's initial velocity? A. 20 m/s B. 30 m/...
Sunday, September 25, 2016 by Roy

Physics
Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a frictionless, massless pulley...
Sunday, September 25, 2016 by Max

Physics
You throw a water balloon hoping to hit your sibling. You throw it at an angle of 21.0° at 5.50 m/s. It ends up leaving your hand at a height of 1.70 m above the ground. It completely misses your sibling and breaks on the ground. How far did the water balloon travel?
Sunday, September 25, 2016 by Caroline

Physics
You push a skateboard so that it rolls down the road at a speed of 0.700 m/s. You run after the skateboard at a speed of 3.90 m/s and while still behind the skateboard you jump off the ground at an angle of 28.0° above the horizontal hoping to land on the skateboard. How ...
Sunday, September 25, 2016 by Caroline

Physics
A cheetah can maintain its maximum speed of 29.5 m/s for only 35.3 seconds. What is the maximum distance a gazelle running at 26.2 m/s must be ahead of the cheetah to have a chance of escaping?
Sunday, September 25, 2016 by Josh

Physics
A mass (m1) is connected by a light string that passes over a massless frictionless pulley to a mass (m2) sliding on a horizontal surface. The coefficient of kinetic friction between the m2 and the surface is 0.25. If m1=1.0kg and m2=2.0kg then what is the acceleration of the ...
Sunday, September 25, 2016 by Bex

physics
a body is moving with a velocity of 20 meter per second is apply abrack such that it stop in 2 second mass of body is 20 kg find the forse appley by brack
Sunday, September 25, 2016 by pankaj

Physics
Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a frictionless, massless pulley...
Sunday, September 25, 2016 by ASak

Physics
A body slides down from the rest from the top of6.4m long rough inclined plane at 30 degree with the horizontal.find the time taken by the body in reaching the bottom of the plane. Take mu k=0.2 and g=10m/s2
Sunday, September 25, 2016 by Anonymous

Physics
You step onto a hot beach with your bare feet. A nerve impulse, generated in your foot, travels through your nervous system at an average speed of 152 m/s. How much time does it take for the impulse, which travels a distance of 1.65 m, to reach your brain?
Sunday, September 25, 2016 by Sherlie

Physics
For a standard production car, the highest road-tested acceleration ever reported occurred in 1993, when a Ford RS200 Evolution went from zero to 26.8 m/s (60 mi/h) in 3.596 s. Find the magnitude of the car's acceleration.
Sunday, September 25, 2016 by Sherlie

Physics
A infinite wire carrying a current 5A is bent at right angle find the magnetic Induction at a point on the perpendicular to the wire through its point of bending at a distance 35 cm from the corner
Sunday, September 25, 2016 by Mia

Physics
1) A 2.5kg durian falls from a tree with a height of 30m. Determine the energy before it falls in Joule. 2) A 2.5kg durian falls from a tree with a height of 30m. Determine the velocity when it drops 20m from the ground. 3) A 2.5kg durian falls from a tree with a height of 30m...
Sunday, September 25, 2016 by Enileda

Physics
You push a block of mass m up a plane inclined at angle θ at constant velocity v with a force F parallel to the inclined plane. The coefficient of kinetic friction between the block and the plane is µk. Which is the correct equation for F? (g = gravitational ...
Saturday, September 24, 2016 by Rick

Physics
While playing catch with your sister, you accidentally throw a tennis ball past her and horizontally out the window of your third floor apartment. If a window washer is startled by the passing tennis ball and drops her sponge from rest at that very moment, which describes the ...
Saturday, September 24, 2016 by Lyon

Physics
A missile is fired with a launch velocity of 15000 ft/s at a target 1200 miles away. At what angle must it be fired to hit the target? how long after it is fired will the target be hit?
Saturday, September 24, 2016 by Aria

Physics
If a dog chases its tail in a perfect circle of radius r at constant speed v, which of the following is true? A. The dog's acceleration is zero. B. The dog's velocity is constant. C. The sum of the forces, F , acting on the dog is zero. D. The time it takes the dog to ...
Saturday, September 24, 2016 by Lyon

Physics
Ximena stands near the edge of a cliff 20 ma bove her friend Javier. If she throws a ball to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the sandwich's initial velocity? (use g = 10 m/s2)
Saturday, September 24, 2016 by Tom

physics
HARRY GIVES SAM A 30m head start in 100m dash. Harry can run 10m/s, while sam only runs 6.0 m/s per second, how much of a head start does sam need to win!
Saturday, September 24, 2016 by brahtherfrmanothermather

Physics
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.80 m/s and Luna runs at a speed of 1.60 m/s. If Chloe jumps at an angle of 17.0° while still running toward Luna, at what distance from Luna should Chloe ...
Saturday, September 24, 2016 by Tom

Physics
Four charges are located at the four corners of a square of side b: Q1 = 3 nC at the top right corner, Q2 = -4 nC at the bottom right corner, Q3 = 5 nC at the top left corner, Q4 = 7 nC at the bottom left corner. What is the electric field at the midpoint between Q3 and Q4?
Saturday, September 24, 2016 by Steve

Physics
An electric dipole p-> (-> is vector symbol) where p-> = (5x10^-15 C m, -5x10^-15 C m, 0 C m) located at r-> = (0 m, -0.005 m, 0m) Q = 1x10^-6 C at origin. What's the torque on the dipole?
Saturday, September 24, 2016 by Jan

Physics
You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.90 m/s. You jump at an angle of 30.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.72 m away from you. If you are able to ...
Saturday, September 24, 2016 by Tom

Physics
Block A (Mass = 3.500 kg) and Block B (Mass = 2.450 kg) are attached by a massless string Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes overa frictionless, massless pulley. Block B hangs down vertically as shown. ...
Saturday, September 24, 2016 by ASak

Physics
Two kittens are running toward each other, one is named Chloe and the other is named Luna. Chloe runs at a speed of 2.00 m/s and Luna runs at a speed of 1.20 m/s. If Chloe jumps at an angle of 37.0° while still running toward Luna, at what distance from Luna should Chloe ...
Saturday, September 24, 2016 by Brooklyn

Physics
A BMX rider is coming up to a ramp that is set to 23.0° and the end point is 1.60 m above the ground. They travel up the ramp at a steady speed of 9.20 m/s. What speed will they have just before they hit the ground?
Saturday, September 24, 2016 by Brooklyn

Physics
Block A (Mass = 3.146 kg) and Block B (Mass = 2.330 kg) are attached by a massless string Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes overa frictionless, massless pulley. Block B hangs down vertically as shown. ...
Saturday, September 24, 2016 by Quaz

Physics
"You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already ...
Saturday, September 24, 2016 by BunBun

Physics
You are walking a dog when the dog sees a cat and runs away from you. You immediately run after the dog at 4.20 m/s. You jump at an angle of 28.0° to try and catch the dog. While you are in the air the dog is able to move an extra 1.57 m away from you. If you are able to ...
Saturday, September 24, 2016 by Brooklyn

Physics
A fired bullet sounds is heard after2sec .its speed in air is 340m\sec.what is the distance of sound.
Saturday, September 24, 2016 by Pratham

Physics
A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines? What is the horizontal force that a 700 N pilot exerts on his seat?
Saturday, September 24, 2016 by Jadon

physics
Hello everyone I'm working on this problem and I need some clarification. A 40 tonne jumbo jet accelerates down the runway at 5 m/s^2. What must be the thrust on each of its four engines? What is the horizontal force that a 700 N pilot exerts on his seat? I can calculate ...
Saturday, September 24, 2016 by Jadon

Physics
An arrow is shot from a height of 1.4 m toward a cliff of height H. It is shot with a velocity of 28 m/s at an angle of 60° above the horizontal. It lands on the top edge of the cliff 3.6 s later. a) What is the height of the cliff (in m)? I got 25.191 m and thats the ...
Friday, September 23, 2016 by A

Physics
Christiano Ronaldo kicks a soccer ball with an initial velocity of 24.0 m/s at an angle of 25.0°. How far away does the ball land?
Friday, September 23, 2016 by Brooklyn

Physics
A dart is being thrown at a board that is 2.80 m away. When it hits the board it is 0.486 m below the point where it was aimed and it was thrown at 8.90 m/s. How long was the dart in the air?
Friday, September 23, 2016 by Brooklyn

Physics
At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 930 m/s2 and the vertical or y component of its acceleration is 930 m/s2. The ball's mass is 0.39 kg. What is the ...
Friday, September 23, 2016 by BrookeNeed

Physics
A box of mass m slides down an inclined plane that makes an angle of φ with the horizontal. If the coefficient of kinetic friction is μk, find an expression for the acceleration of the box down the slope. The acceleration due to gravity is g. a. g ( cosφ + μ...
Friday, September 23, 2016 by Tom

Physics
A car of mass accelerates from rest to a speed in time with negligible friction and air resistance. What is an expression for the average power delivered by the car's engine? a) Mv22t b) Mv2t c) Mvt D) Mv2t
Friday, September 23, 2016 by Jared

Physics
A person in a kayak starts paddling, and it accelerates from 0 to 0.568 m/s in a distance of 0.389 m. If the combined mass of the person and the kayak is 79.5 kg, what is the magnitude of the net force acting on the kayak?
Friday, September 23, 2016 by BrookeNeed

physics
A baseball has a mass of 145 g. A bat exerts a force of 18,400 N on the ball. What is the acceleration of the ball
Friday, September 23, 2016 by keke

physics
a stone is thrown vertically upward an initial velocity of 12m/s from the top of a building . it takes 3.4s for the stone to hit the ground a. find the height of the building b. find the maximum height that the stone will reach c. find the speed of the stone when it reaches ...
Friday, September 23, 2016 by khadija

Physics
Keisha throws a baseball with an initial velocity of 30 m/s at 30.0° above the horizontal. If air resistance is negligible, how long does it take for the baseball to reach the maximum height of its trajectory? Assume that the acceleration due to gravity is given by: g = 10...
Friday, September 23, 2016 by Jared

Physics
A large engine with mass of 400 kg must be lifted 3 meters out of a truck for repair. A normal mechanic can lift with about 250 N of pulling force. They use a system of pulleys to do this. If we assume the engine starts on the ground, how long must the ropes be on the pulley ...
Friday, September 23, 2016 by PizzaIsYum

Physics
If C⃗ = -5 i^ - 3 j^ - 4 k^, what is C⃗ × j^?
Friday, September 23, 2016 by Tom

physics
An electron with a speed of 1.9 × 107 m/s moves horizontally into a region where a constant vertical force of 6.0 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it ...
Friday, September 23, 2016 by bigd

Physics
Given the masses of the sun and earth are 1.99x10^30 kg and 5.98x10^24 kg respectively. Calculate the gravitational force between them when their centers are 1.50x10^11m apart
Friday, September 23, 2016 by Yasmin

Physics
If a man is able to row at 5m/s in still water and he points his boat at a 50 degree angle from the shore in an upstream direction in a river that's flowing at 4 m/s how far, either up or downstream will be land on the other side of the river if the river is 45n across?
Friday, September 23, 2016 by Lyssa

physics
A bullet leaves a rifle with a muzzle velocity of 553 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.648 m. Determine the acceleration of the bullet (assume a uniform acceleration).
Thursday, September 22, 2016 by sally

PHYSICS
does an object speed up or slow down when: 1. its velocity is positive (right) and its acceleration is positive (right)? I said it speeds up 2. its velocity is positive (right) and its acceleration is negative (left)? I said it slows down 3. its velocity is negative (left) and...
Thursday, September 22, 2016 by Matt

Physics
You are testing a car on the Nevada salt flats traveling 85 m/s. Your parachute deploys and you decelerate at 13 m/s^2. How long does it take to come to a complete stop?
Thursday, September 22, 2016 by Kay

Physics
a person pushes a 8 kg cart up a 13 degree incline. Find the magnitude of the horizontal force needed to give the cart an acceleration of 1.55 m/s^2.
Thursday, September 22, 2016 by Gilberto

Physics
An object is thrown up in the air at 15 meters per second. You want to figure out how high the object will be at 2.5 seconds after its release. Use the 5 motion variables and list the values and directions of the variables already known. Use a motion equation to find the ...
Thursday, September 22, 2016 by Anonymous

Physics (Sound)
Cellist Yo-Yo Ma plays a note at 250 Hz. A studio technician performs an analysis of the frequency spectrum and reports that she measured the SIL of its peaks (those of the frequency spectrum): 63 dB at 250 Hz, 58 dB at 500 Hz, 56 dB at 750 Hz, and 51 dB at 1000 Hz. Assuming ...
Thursday, September 22, 2016 by Tony

physics
You push a skateboard so that it rolls down the road at a speed of 1.40 m/s. You run after the skateboard at a speed of 3.80 m/s and while still behind the skateboard you jump off the ground at an angle of 30.0° above the horizontal hoping to land on the skateboard. How ...
Thursday, September 22, 2016 by p

Physics
If a ball is thrown off a 123 m cliff at a speed of 18 m/s, how far from the base of the diff is the ball? Givens: Unknown: Equation: Substitute: Solve:
Thursday, September 22, 2016 by Anonymous

Physics
What happens to an object which is initially stationary, if a non-zero resultant force acts on it? Thanks.
Thursday, September 22, 2016 by Anonymous123

physics sir damon help
a uniform disk of moment of inertia 75kgm^2 and radius of gyration 3m rotates with an angular velocity of 2rad/s. determine d : mass , radius , angular momentum . . and . . kinetic energy of d disk . . . .
Thursday, September 22, 2016 by samson

Physics science - forces
A jet plane lands on a runway and decelerate so to rest. What can you say about the direction of the resultant force on the ane as it decelerates? What can yu say about the resultant force acting on the plane as it has come to rest? Many thanks.
Thursday, September 22, 2016 by Anonymous123

physics
A rope of mass M uniformly distributed along its length L ,can slide without friction on a horizontal table. At instant to=0 the hanging part of the rope has a length b and the rope is held at rest .When it is left the rope begins to slide. At instant t the part of the rope ...
Thursday, September 22, 2016 by vicky

Physics
Jennifer swims 4 complete lengths of a 50m pool. What distance did she swim? What is her displacement?
Thursday, September 22, 2016 by Anonymous

physics
A bead slides on the frictionless wire as shown in the figure attached. If the speed of the beead is 2.0 m/s when its at A, how fast will the bead be going at point B and at point C?
Thursday, September 22, 2016 by lex

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