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A brother and sister are standing next to each other at rest on a surface of frictionless ice. The brother’s mass is exactly
1. 4 answers
2. asked by katie
3. 6,366 views
A satellite is in a circular orbit about the earth (ME = 5.98 x 1024 kg). The period of the satellite is 1.77 x 104 s. What is
1. 5 answers
2. asked by Anonymous
3. 15,153 views
Problem 1)I don't understand how they got the answers for A) and B) : Ima Rushin can travel from Milwaukee Avenue to the school
1. 4 answers
2. asked by Dina
3. 3,137 views
In coming to a stop a car leaves skid marks 92m long on the highway. Assuming a decceleration of 7.00m/s^2, estimate the speed
1. 4 answers
2. asked by john
3. 13,903 views
a 5.00kg object placed on a frictionless horizontal table is connected to a string tat passes over a pulley and then is fastened
1. 4 answers
2. asked by Ian
3. 1,254 views
calculate the net electric charge of 1.25 moles of sodium ions ( a sodium ion consist of 11 protons and 10 eletrons).
1. 3 answers
2. asked by Masixole Mnqiwu
3. 1,108 views
what is the peiod of vibrating object which an acceleration of 8.0m/s .when its displacement is 1.0m?what should be the answer?
1. 3 answers
2. asked by ayrin davalos
3. 671 views
need wieght in lb.s an apple weighs 1N mass in kilograms give weight in lb.s
1. 2 answers
2. asked by Student
3. 954 views
A 7.2 kg diver stands at the end of a diving board 2.80 meters from its support. calculate the magnitude of the torque cause by
1. 3 answers
2. asked by dominic
3. 1,161 views
The position of a particle moving along the x-axis is given by x = 3.49t2 – 2.21t3, where x is in meters and t is in seconds.
1. 1 answer
2. asked by jelena pleeease help
3. 379 views
a car is being pulled out of the mud by two two ropes
1. 2 answers
2. asked by Anonymous
3. 532 views
A car is accelerating, from rest, at a rate of 6.74 m/s2. After 4.35 seconds, how far has the car gone?
1. 1 answer
2. asked by sergio
3. 309 views
A car is accelerating, from rest, at a rate of 6.74 m/s2. After 4.35 seconds, how far has the car gone?
1. 1 answer
2. asked by sergio
3. 328 views
a helicopter is flying at an altitude of 1000 m above the ground, with a horizontal velocity of 50 m/s, how far from the rally
1. 1 answer
2. asked by mj
3. 431 views
A child of mass M using a parachute reaches a terminal velocity V, with the air resistance directly proportional to the square
1. 1 answer
2. asked by Lisa
3. 439 views
The left ventricle of the heart accelerates blood from rest to a velocity of + 24.8 cm/s. (a) If the displacement of the blood
1. 3 answers
2. asked by Anonymous
3. 649 views
Two rockets are flying in the same direction and are side by side at the instant their retrorockets fire. Rocket A has an
1. 2 answers
2. asked by Anonymous
3. 1,159 views
In an historical movie, two knights on horseback start from rest 88.7 m apart and ride directly toward each other to do battle.
1. 1 answer
2. asked by Anonymous
3. 465 views
A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's
1. 4 answers
2. asked by anonymous
3. 3,202 views
A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's
1. 1 answer
2. asked by anonymous
3. 504 views
Only two forces act on an object (mass=4.00 kg), as in the drawing. Find (a) the magnitude and (b) the direction (relative to
1. 4 answers
2. asked by Anonymous
3. 1,594 views
Two forces and are applied to an object whose mass is 13.2 kg. The larger force is . When both forces point due east, the
1. 1 answer
2. asked by Anonymous
3. 660 views
The sun is more massive than the moon, but the sun is farther from the earth. Which one exerts a greater gravitational force on
1. 1 answer
2. asked by Anonymous
3. 658 views
The drawing shows a wire tooth brace used by orthodontists. The top-most tooth is protruding slightly, and the tension in the
1. 2 answers
2. asked by Anonymous
3. 622 views
A 103-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is ìk =
1. 2 answers
2. asked by Anonymous
3. 512 views
The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles
1. 2 answers
2. asked by Anonymous
3. 603 views
A person is trying to judge whether a picture (mass = 2.27 kg) is properly positioned by temporarily pressing it against a wall.
1. 2 answers
2. asked by Anonymous
3. 576 views
A speed skater goes around a turn that has a radius of 35 m. The skater has a speed of 14 m/s and experiences a centripetal
1. 3 answers
2. asked by Anonymous
3. 544 views
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the
1. 3 answers
2. asked by Anonymous
3. 545 views
Two satellites are in circular orbits around the earth. The orbit for satellite A is at a height of 418 km above the earth’s
1. 3 answers
2. asked by Anonymous
3. 773 views
The model airplane in Figure 5.6 is flying at a speed of 13.6 m/s on a horizontal circle of radius 19.1 m. The mass of the plane
1. 2 answers
2. asked by Anonymous
3. 939 views
A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against
1. 1 answer
2. asked by Anonymous
3. 424 views
When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees
1. 3 answers
2. asked by Anonymous
3. 561 views
A person is sitting with one leg outstretched and stationary, so that it makes an angle of 30.0° with the horizontal, as the
1. 4 answers
2. asked by Anonymous
3. 1,298 views
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might
1. 1 answer
2. asked by Anonymous
3. 494 views
A person who weighs 869 N is riding a 98-N mountain bike. Suppose the entire weight of the rider plus bike is supported equally
1. 1 answer
2. asked by Anonymous
3. 681 views
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might
1. 2 answers
2. asked by Anonymous
3. 532 views
The drawing shows an intravenous feeding. With the distance shown, nutrient solution (ρ = 1050 kg/m3) can just barely enter the
1. 1 answer
2. asked by Anonymous
3. 764 views
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.13 s, and the velocity of the car
1. 2 answers
2. asked by rrrr
3. 628 views
A 8.00-kg block of ice, released from rest at the top of a 1.44-m-long frictionless ramp, slides downhill, reaching a speed of
1. 2 answers
2. asked by Anas
3. 717 views
A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as the officials' boat pulls
1. 1 answer
2. asked by Wendy
3. 375 views
Two isolated masses, M1 = 2.20 kg and M2 = 589 kg are initially rest, a distance d= 161 cm apart. Their gravitational attraction
1. 5 answers
2. asked by katherine
3. 1,234 views
444g mass vibrates according to the equation x = 0.348 sin (5.82 t) where x is in meters and t is in seconds. Determine the
1. 2 answers
2. asked by katherine
3. 482 views
An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from
1. 2 answers
2. asked by Emily
3. 1,081 views
A house is 80.0 ft long and 22 ft wide, and has 8.0 ft high ceilings. What is the volume of the interior of the house in cubic
1. 1 answer
2. asked by jojo
3. 455 views
The base of a pyramid covers an area of 13.0 acres (1 acre = 43,560 ft2) and has a height of 481 ft. If the volume of a pyramid
1. 4 answers
2. asked by jojo
3. 3,335 views
A ladder 8.70 m long leans against the side of a building. If the ladder is inclined at an angle of 69.0° to the horizontal,
1. 3 answers
2. asked by jojo
3. 560 views
A 3.50 kg ball with a velocity of 10.00 m/s collides with a stationary ball with a mass of 5.00 kg. After the collision, the
1. 1 answer
2. asked by i
3. 367 views
If the position of an object is given by x = 2.00t^3, where x is measured in meters and t in seconds, find (a) the average
1. 3 answers
2. asked by lolo
3. 1,190 views
use these values of initial position and initial velocity in the following questions. Initial position 1.0 m above ground
1. 2 answers
2. asked by kim clark
3. 995 views
Q4= The unit of mass in S.I. unit is?a. kilogram b. gram c. tonne d. quintal e. newton
1. 4 answers
2. asked by hi bro it's me ( ^_^) himel@,Damon ,Steve,Henry. ,Ms.Sue & all respect sir
3. 528 views
) An oil tanker’s engines have broken down, and the wind is blowing the tanker straight toward a reef at a constantspeed of
1. 3 answers
2. asked by omar
3. 2,791 views
Glass has a density of about 2500 Kg/m^3. fresh water has a density of 1000 kg/m^3. if a 5 kg block of glass is sitting on the
1. 1 answer
2. asked by Maria
3. 425 views
A floating cube is 10 cm on a side and has a density of 800 kg/m^3 . IT is floating in fresh water that has a density of 1000
1. 3 answers
2. asked by Maria
3. 641 views
a simple pendulum is used to measured the value of g.when the lenght of the pendulum is 98.5cm, the period is measured to be
1. 1 answer
2. asked by diane dc
3. 368 views
what is the peiod of vibrating object which an acceleration of 8.0m/s .when its displacement is 1.0m?what should be the answer?
1. 1 answer
2. asked by diane dc
3. 328 views
a simple pendulum is 1m long.what is its period?
1. 1 answer
2. asked by diane dc
3. 439 views
Bob has a helicopter from the launch pad he flies the following path. First he travels from the launch pad a distance of 24
1. 2 answers
2. asked by john williams
3. 617 views
Bob has a helicopter and from the launch pad he flies the following path: First he travels from the launch pad a distance of 24
1. 5 answers
2. asked by john wiliams
3. 495 views
A boat has a cannon on board that faces aft. The boat is capable of traveling at19 m/s on still water. The boat is traveling
1. 2 answers
2. asked by john wiliams
3. 514 views
A bike wheel is spun until it reaches an angular velocity of 2.00 rad/s. It was spun for 1.28 s. What was its change in angle
1. 1 answer
2. asked by anon
3. 318 views
A is hand pushing a 18.2 kg block. The two blocks, 18.2 kg and 22.0 kg, are attached to a string and move along a frictionless
1. 1 answer
2. asked by anon
3. 240 views
A hand pushing a 18.2 kg block. The two blocks, 18.2 kg and 22.0 kg, are attached to a string and move along a frictionless
1. 1 answer
2. asked by anon
3. 279 views
Movers are looking to lower a cabinet out of an open window to a mattress on the ground below. One end of a rope is tied to a
1. 1 answer
2. asked by anon
3. 283 views
A wheel has a rotational inertia of 3.0 kg⋅m2. At the instant the wheel has a counterclockwise angular velocity of 10.0 rad/s,
1. 3 answers
2. asked by Anonymous
3. 876 views
A long, thin rod with moment of inertia I=2 kg•m2 is free to rotate about an axis passing through the midpoint of the rod. The
1. 3 answers
2. asked by Anonymous
3. 855 views

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