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Physics
Page 63
Questions (147,495)
A ball is thrown upward with speed 12m/s from the top of a building. How much later must a second ball be dropped. From the same
4 answers
asked by
Majiri
1,716 views
Two resistors of resistances 3 ohms and 6 ohms are connected in a parallel across a 9 V battery. What is the equivalent
6 answers
asked by
Sam
4,279 views
A wheel mounted on a stationary axle starts at rest and is given the following angular acceleration: 9-12t where t is the time
4 answers
asked by
Happinessdelight
2,561 views
What is the density of a fuel of relative density 0.72
4 answers
asked by
ogu
783 views
A 400-gram package lying on a horizontal surface is attached to a horizontal string which passes over a smooth pulley. When a
4 answers
asked by
Rheabelle
4,419 views
A 12 kg wagon is being pulled at an angle of 38degrees above horizontal. What force is applied to
the wagon if it accelerates
4 answers
asked by
I need Physics help
1,179 views
A student throws a 140 g snowball at 7.5 m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of
5 answers
asked by
Anonymous
5,099 views
Imagine that the asteroid A that has an escape velocity of 50m/s. If asteroid B has twice the mass and twice the radius it would
5 answers
asked by
Ellie
3,063 views
find the mass of a ball on a roof 30 meters high, if the ball's gravitational energy is 58.8 joules.
4 answers
asked by
Anonymous
2,767 views
The air pressure in a tire is 2.38 atm. What is this pressure in kilopascals?
4 answers
asked by
A.C.
2,569 views
If a 100-g mass was placed at the 25-cm mark, and a 20-g mass at the 10-cm mark, where should a 500-g mass be placed to balance
5 answers
asked by
Lila
5,206 views
Approaching a flashing pedestrian activated traffic light, a driver must slow down to a speed of 30km/h. If the cross walk is
4 answers
asked by
jason
2,299 views
Turning a doorknob through 0.53 of a revolution requires 0.10 J of work. What is the torque required to turn the doorknob?
4 answers
asked by
stoic-rider77
640 views
1. A whistle you use to call your hunting dog has a frequency of 21 kHz, but your dog is ignoring it. You suspect the whistle
4 answers
asked by
Emmy Davidson
5,518 views
A string is wound is tightly around a wheel. When the end of the string is pulled through a distance of 10 cm, the wheel rotates
4 answers
asked by
Amy
3,529 views
Two point charges have a total charge of 505 µC. When placed 1.10 m apart, the force each exerts on the other is 19.3 N and is
4 answers
asked by
Eric
1,705 views
A car travels 20km due north and then 35km in a direction 60 degree west of north. Find the magnitude and direction of the
5 answers
asked by
Chinedu
5,772 views
determine the distance from earths centre where the force of gravity acting on a space probe is only 11% of the force acting on
4 answers
asked by
Bobbie
743 views
What is the diameter of a 1.00 meter length of tungsten wire whose resistance is 0.32 ohm (electrical resistance)?
4 answers
asked by
Jenny
5,236 views
5. The length of a simple pendulum with a period on Earth of one second is most nearly
a.) 0.12 m b.) 0.25 m c.) 0.50 m d.) 1.0 m
4 answers
asked by
gomez
3,215 views
Calculate the power of a pump which lifts 500kg of water through a vertical height of 4m in 5sec (assuming g=10m/s^2).
4 answers
asked by
...Mas'ud S. Yusuf#
932 views
An elastic string stretches to a total length of 30cm under a load of 500N. With an additional load of 100N, the string
4 answers
asked by
Abidoye
880 views
A mass of 0.5kg is attached to one end of a helical spring and produced an extension amplitudeof 2.5cm.The mass is now set into
7 answers
asked by
Ayodeji
731 views
A copper block of mass 100g at a temperature of 150 degree celcius is dropped into a copper calorimeter of 40g containing 80g of
4 answers
asked by
Blessing
1,109 views
a body is projected horizontally with a velocity of 80m/s from the top of a tower 160m above the ground. find the time of
5 answers
asked by
Projectile
1,197 views
A tractor is towing a large trailer on a horizontal road at a constant speed of 15km/h .The mass of the trailer is 1.3t and the
4 answers
asked by
Pearl
902 views
A radioactive substance decays exponentially. A scientist begins with 130 milligrams of a radioactive substance. After 20 hours,
4 answers
asked by
Jhon
3,417 views
Three different size lights are running off a low voltage system. The resistance of the three lights are R1 =3 ohms, R2 = 9
4 answers
asked by
DariaV
1,406 views
A helicopter drops a box of supplies after a disaster. The function represents the height y (in feet) of the box t seconds after
4 answers
asked by
Robert
2,264 views
A thin copper rod 1m long has a mass of 50g. What should be the direction of magnetic field and the maximum current in the rod
4 answers
asked by
Raven
5,446 views
A model rocket has a mass of 0.435 kg. It is mounted vertically and launches directly up with a thrust force of 13.1 N.
a) What
4 answers
asked by
Tom
2,355 views
Jason while driving on Kukum highway at 70 m.s – 1 seeing the traffic light turn red, he applies the brake and comes to rest
4 answers
asked by
micky
1,024 views
A body starts from rest and accelerates to a velocity of 5m/s in 20s. It then maintains this velocity for
10s and then
4 answers
asked by
Mary
1,123 views
Distinguish between instantaneous speed and average speed. A man drives a car a distance of 200km at an average speed of
5 answers
asked by
olagunju love
2,739 views
a child mass m slides down a slide 5 m high. the child speed at the bottom of the slide is 3 meters per second. what is the
4 answers
asked by
Dan
1,479 views
A solid bar of length L = 1.32 m has a mass m1 = 0.751 kg. The bar is fastened by a pivot at one end to a wall which is at an
4 answers
asked by
Misaki
1,540 views
The rotational velocity of a merry-go-round increases at a constant rate from 1 rad/s to 2.1 rad/s in a time of 5.8 s. What is
4 answers
asked by
Anonymous
1,576 views
A car drives 1000 feet on a road that is 8 degrees to the horizontal, as shown in the figure. The car weighs 3400 lb. Thus
4 answers
asked by
Jonny
1,487 views
Two speeding lead bullets each of mass 5 g and temperature of 20°C collide head on at speeds of 500m/s each. Assuming a
4 answers
asked by
Brody
1,137 views
a worker lays a rubber handled 0.500kg hammer down a sloped roof. it slides down the roof to a level portion of the roof where
4 answers
asked by
teed
1,517 views
Light waves are electromagnetic waves that travel at 3.00 108 m/s. The eye is most sensitive to light having a wavelength of
4 answers
asked by
Ame
7,093 views
1. Find the pressure exerted on the ground (in psi) by a 250 lb person who is sitting on a chair whose 4 legs touch the ground
4 answers
asked by
Fix30
3,456 views
What is the angular momentum (in kg*m*m/s) of a 790 gram symmetrical rotating bar which is 2.85 m long and spinning at 245 rpm
4 answers
asked by
dan
1,005 views
a ball moves up a hill with an initial velocity of 3m/s. four seconds later, it is moving down the hill at 9.0m/s. find the
4 answers
asked by
osama
723 views
A stone is thrown vertically upwards from the top of a tower 50.0m high with an intial velocity of 20.0m/s. (a) whats the
4 answers
asked by
Jess
2,698 views
A person stands 4.4 m in front of a wall that is covered floor-to-ceiling with a plane mirror. His eyes are 1.9 m above the
4 answers
asked by
rick
1,081 views
A 2.00 METER TALL BASKETBALL PLAYER ATTEMPTS A GOAL 10.00 METERS FROM THE BASKET(3.05 METERS HIGH). IF HE SHOOTS THE BALL AT A
4 answers
asked by
Jill Hefner
4,024 views
What is a newton?(1 point)
a non-contact force a force that pulls objects toward the ground the unit in which force is measured a
4 answers
asked by
MildlyInfuriatedFrog
288 views
Interaction of Waves Quick Check
1 of 41 of 4 Items Question When white light strikes this object, the light is completely
4 answers
asked by
Pheoinx
292 views
Object Mass (grams)
table tennis ball 2.7 baseball 147.0 small rock 248.2 penny 2.5 A student drops the four objects listed from
4 answers
asked by
leah
254 views
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