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Find the horizontal range of a baseball that leaves the bat at an angle of 63 degrees, with the horizontal with an initial
1. 5 answers
2. asked by Brittany
3. 1,980 views
A ball is thrown straight upward. At 5.00 m above its launch point, the ball’s speed is one-half its launch speed. What
1. 4 answers
2. asked by Johnny
3. 4,606 views
A crippled ship is being assisted to port. The motor is stuck, and is moving the boat east with a speed of 15 km/h. The current
1. 2 answers
2. asked by morgan
3. 510 views
A system does 3.7 × 104 J of work, and 8.5 × 104 J of heat flows into the system during the process. Find the change in the
1. 3 answers
2. asked by minka
3. 624 views
Consulting the graph shown in (Figure 1) , determine the object's average velocity over the time interval from 2 to 4 seconds.Ex
1. 4 answers
2. asked by Rachel
3. 3,253 views
Cheryl is riding on the edge of a merry-go-round, 2m from the center, which is rotating with an increasing angular speed.
1. 4 answers
2. asked by sarah
3. 7,187 views
The choroid and the auricle are similar because,one collects light and the other collects sound?
1. 3 answers
2. asked by Anonymous
3. 548 views
on a warm day(92 degrees F) an air filled balloon occupies a volume of .20m^3 and is under a pressure of 20.0 lbs/in^2. if the
1. 3 answers
2. asked by Standard C.
3. 688 views
convert 36cm/min to km/h
1. 1 answer
2. asked by alisha
3. 419 views
The position of a 2.75 *10^5 N training helicopter under test is given byr = (0.020 m/s^3)(t^3)i + (2.2 m/s)(t)j - (0.060
1. 4 answers
2. asked by ami
3. 1,699 views
Tritium (half-life = 12.3 y) is used to verify the age of expensive brandies. If an old brandy contains only the following
1. 5 answers
2. asked by ashley
3. 561 views
Pick the radioactive isotope in each set.23/11 20/9 Explain your choice. a)its atomic number is greater than 83 b)it has fewer n
1. 2 answers
2. asked by ashley
3. 558 views
i need help setting it up to find the answers. (answers included)two masses are connected together by a string which is then
1. 2 answers
2. asked by danielle
3. 921 views
If two cars are traveling along a straight road, one behind the other. the first is traveling at a constant velocity of 10 m/s.
1. 2 answers
2. asked by billy
3. 621 views
a SHO has a maximum speed of 5m/s. How fast will it be going when the potential energy is seven-ninths of the kinetic energy.
1. 1 answer
2. asked by brandy
3. 284 views
A jet plane is flying with a constant speed along a straight line, at an angle of 25.0° above the horizontal, as Figure 4.30a
1. 2 answers
2. asked by angela
3. 831 views
A ball is placed at the top of a hill of incline 60.0 degrees. The ball isallowed to roll for 12.0 seconds. How far will the
1. 3 answers
2. asked by lola
3. 441 views
a 2kg mallet is dropped from a height of .6m onto a nail, driving it 3.5 cm into the wood. What is the average force exerted by
1. 1 answer
2. asked by jinny
3. 361 views
An athlete in a competition needs to get from point A to another point B directly across from a river. He can swim in stationary
1. 2 answers
2. asked by Roxie Anne
3. 562 views
calculate the gravitational force between a student with mass (60kg) and her desk (5kg) if she is sitting .2m from her desk
1. 1 answer
2. asked by clayton
3. 458 views
A mechanic pushes a(n) 3980 kg car fromrest to a speed of v, doing 5107 J of work in the process. During this time, the car
1. 1 answer
2. asked by leslie
3. 452 views
A novice golfer on the green takes threestrokes to sink the ball. The successive dis- placements are 5.9 m to the north, 10 m 45
1. 1 answer
2. asked by robert
3. 424 views
Ethyl alcohol has been added to 190 {\rm mL} of water in a container that has a mass of 140 {\rm g} when empty. The resulting
1. 2 answers
2. asked by please help
3. 544 views
Calculate (in MeV ) the binding energy per nucleon for 40 Ca .
1. 1 answer
2. asked by paige
3. 459 views
For a given launch velocity, at which launch angle does the projectile undergo the maximum horizontal displacement?
1. 5 answers
2. asked by Lauren01
3. 911 views
during a process, 21.6 MJ of heat is added to closed system. if the internal energy is increased by 59.6 MJ, how much work in
1. 2 answers
2. asked by mikel
3. 581 views
Richard is driving home to visit his parents. 125 of the trip are on the interstate highway where the speed limit is 65 .
1. 3 answers
2. asked by tamika
3. 835 views
find the acceleration if the velocity changes from:a) 2m/s to 4m/s in 4s b) 5m/s to 10m/s in 2s c) 100m/s to 120m/s in 5s d)
1. 1 answer
2. asked by nicky
3. 378 views
A box of mass 0.385 kg slides down a very smooth (frictionless) ramp which is inclined at an angle of 56.6° above the
1. 4 answers
2. asked by Amy
3. 1,484 views
When you see a traffic light turn red, you apply the brakes until you come to a stop. Suppose your initial speed was 12.9 m/s,
1. 3 answers
2. asked by Anonymous
3. 743 views
A train at a constant 44.0 km/h moves east for 42 min, then in a direction 45.0° east of due north for 17.0 min, and then west
1. 2 answers
2. asked by D
3. 514 views
a child playing jacks bounces a super ball on tha sdewalk. The collision is elastic. Does each object have the same kinetic
1. 1 answer
2. asked by lynn
3. 960 views
A 0.2 kg plastic ball moves with a velocity of 1.5 m/s. It collides with a second plastic ball of mass 1.8 kg, which is moving
1. 2 answers
2. asked by MEEEEE
3. 653 views
In an historical movie, two knights on horseback start from rest 94.3 m apart and ride directly toward each other to do battle.
1. 1 answer
2. asked by question
3. 393 views
A car is traveling at a constant speed of 31.8 m/s on a highway. At the instant this car passes an entrance ramp, a second car
1. 2 answers
2. asked by larry
3. 623 views
An airport has runways only 184 m long. Asmall plane must reach a ground speed of 40 m/s before it can become airborne. What
1. 3 answers
2. asked by cram
3. 603 views
The steering wheel of a car has a radius of 0.19 m, and the steering wheel of a truck has a radius of 0.26 m. The same force is
1. 1 answer
2. asked by bobby
3. 877 views
You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude
1. 1 answer
2. asked by bobby
3. 974 views
One end of a meter stick is pinned to a table, so the stick can rotate freely in a plane parallel to the tabletop. Two forces,
1. 2 answers
2. asked by bobby
3. 1,120 views
A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 470 N and have a center of gravity
1. 4 answers
2. asked by bobby
3. 1,602 views
The figure shows a person whose weight is W = 500 N doing push-ups. Find the normal force exerted by the floor on (a) each hand
1. 3 answers
2. asked by bobby
3. 1,105 views
A person who weighs 829 N steps onto a spring scale in the bathroom, and the spring compresses by 0.538 cm. (a) What is the
1. 3 answers
2. asked by bobby
3. 938 views
The wheels, axle, and handles of a wheelbarrow weigh W = 53 N. The load chamber and its contents weigh WL = 547 N. The drawing
1. 3 answers
2. asked by LLYOD BLUE
3. 572 views
A 1390-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate
1. 1 answer
2. asked by LLYOD BLUE
3. 692 views
An object in simple harmonic motion has an amplitude of 0.202 m and an oscillation period of 0.620 s. Determine the maximum
1. 1 answer
2. asked by Joey
3. 829 views
A 0.20-kg object is attached to the end of an ideal horizontal spring that has a spring constant of 120 N/m. The simple harmonic
1. 1 answer
2. asked by Joey
3. 697 views
An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 25.1 rad/s.
1. 2 answers
2. asked by Joey
3. 1,188 views
When responding to sound, the human eardrum vibrates about its equilibrium position. Suppose an eardrum is vibrating with an
1. 2 answers
2. asked by Joey
3. 738 views
A block of mass m = 0.510 kg is fastened to an unstrained horizontal spring whose spring constant is k = 85.3 N/m. The block is
1. 1 answer
2. asked by MATT
3. 391 views
Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring
1. 1 answer
2. asked by MATT
3. 650 views
A simple pendulum is made from a 0.781-m-long string and a small ball attached to its free end. The ball is pulled to one side
1. 3 answers
2. asked by MATT
3. 791 views
A 11.7-kg uniform board is wedged into a corner and held by a spring at a 50.0° angle, as the drawing shows. The spring has a
1. 2 answers
2. asked by MATT
3. 492 views
An object on a vertical spring oscillates up and down in simple harmonic motion with an angular frequency of 25.1 rad/s.
1. 1 answer
2. asked by Joey
3. 725 views
A hand exerciser utilizes a coiled spring. A force of 86.9 N is required to compress the spring by 0.0231 m. Determine the force
1. 2 answers
2. asked by Joey
3. 502 views
A glass bottle of soda is sealed with a screw cap. The absolute pressure of the carbon dioxide inside the bottle is 1.60 x 105
1. 1 answer
2. asked by John
3. 711 views
A projectile is launched horizontally with a speed of 80.0 m/s. If the projectiles is launched above the floor, how long does it
1. 3 answers
2. asked by sydney
3. 470 views
An electron and a proton are placed at rest in a uniform electric field modulus equal to 520N / C. Calculate the speed of each
1. 1 answer
2. asked by Anonymous
3. 398 views
An electron and a proton are placed at rest in a uniform electric field modulus equal to 520N / C. Calculate the speed of each
1. 1 answer
2. asked by Anonymous
3. 415 views
A very long 1.75 cm diameter glass rod has one end ground and polished to a convex spherical surface that has a 7.30 cm radius.
1. 1 answer
2. asked by Anonymous
3. 602 views
_________ was the first to show that all objects fall toward Earth with constant ____________.
1. 1 answer
2. asked by Ashley
3. 346 views
If the coefficient of static friction between the board and the wall is 0.81, what is the least force you can apply and still
1. 3 answers
2. asked by Anonymous
3. 533 views
suggest what will happen to the bucket
1. 1 answer
2. asked by mpho rameregi
3. 265 views
When Babe Ruth hit a homer over the 10 m -high right-field fence 80 m from home plate, roughly what was the minimum speed of the
1. 2 answers
2. asked by Al
3. 571 views
Four cars undergo acceleration as described by the data in the following table.Car Initial Velocity (m/s) Final Velocity (m/s)
1. 4 answers
2. asked by sharon
3. 4,889 views
Suppose a runner completes one lap around a 400-m track in a time of 50 s. Calculate the average velocity of the runner.Express
1. 6 answers
2. asked by shelby
3. 6,077 views
Consulting the graph shown in (Figure 1) , determine the object's average velocity over the time interval from 2 to 4 seconds.Ex
1. 3 answers
2. asked by Rachel
3. 1,891 views
Why does the distance traveled by the ball in each half second after it is released change in the way that it does?A.Gravity is
1. 2 answers
2. asked by rachel
3. 901 views
A dart leaves the barrel of a blowgun at a speed v. The length of the blowgun barrel is L. Assume that the acceleration of the
1. 4 answers
2. asked by rachel
3. 6,638 views
A car takes 11 s to go from v=0m/s to v = 22 m/s at constant acceleration.If you wish to find the distance traveled using the
1. 4 answers
2. asked by rachel
3. 3,515 views
A dart leaves the barrel of a blowgun at a speed v. The length of the blowgun barrel is L. Assume that the acceleration of the
1. 2 answers
2. asked by sarah
3. 1,194 views
A car takes 11 s to go from v=0m/s to v = 22 m/s at constant acceleration.If you wish to find the distance traveled using the
1. 3 answers
2. asked by sarah
3. 1,018 views
a 1350 g projectile is launched with a force of 150N. the length f the firing arm is 1.25 m . determine the velocity
1. 1 answer
2. asked by kim
3. 370 views
Calculate the specific gravity of a liquid given the following information: m = 59.30 g, mA = 33.78 g, mL = 43.60 g.
1. 2 answers
2. asked by Kim
3. 676 views
A gymnast bounces upward from a trampoline at an initial height of 1.2m and reaches a maximum height of 4.8m before falling back
1. 2 answers
2. asked by Anonymous
3. 594 views
dicusselastic collision in one dimension.Obtain expression for velocities of two bodies after such a collision
1. 1 answer
2. asked by Priti
3. 406 views
a dog runs at a speed of 4m/s how many minutes does It take the dog to go 1 km?
1. 1 answer
2. asked by glenn
3. 345 views
How far (in meters) above the earth's surface will the acceleration of gravity be 34.0 % of what it is on the surface?
1. 1 answer
2. asked by kassy
3. 378 views
A Verdant Power water turbine (a "windmill" in water) turns in the East River near New York City. Its propeller is 2.5 m in
1. 1 answer
2. asked by clara
3. 1,040 views
what is the magnitude of the electric field at point 2 m from a point charge q=4nC?
1. 3 answers
2. asked by skooo
3. 1,742 views
A tennis player places a 68kg ball machine on a frictionless surface. the machine fires a 0.057 kg tennis ball horizontally with
1. 4 answers
2. asked by jay
3. 1,223 views
Two point charges 5uc and 3uc are fixed 4cm apart . calculate the distance in between them at which the resultant is zero
1. 4 answers
2. asked by lucy
3. 1,213 views
If a 10 kg brick is thrown at 22 meters per second, what is the brick’s momentum?
1. 1 answer
2. asked by Niall McGouran
3. 190 views
Consider a cart moving along the x-axis at -2.0 m/s. After a brief acceleration at a rate of -3.0 m/s2 , its velocity is -6.0
1. 1 answer
2. asked by glen
3. 67 views

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