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Physics
Page 54
Questions (146,380)
An object is dropped from a height H and reaches the ground with a velocity v. The same object is thrown down from the same
4 answers
asked by
Anonymous
1,597 views
a football is thrown to a moving receiver .the football leaves the quarterback's hands 1.75m above the ground with a velocity of
4 answers
asked by
jake
2,376 views
Determine the specific heat of iron if 6.1 J of energy are needed to warm 1.50 g of iron from 20 degrees C to 29 degrees C
5 answers
asked by
Anonymous
2,181 views
Part 1
A 3.0 kg block is pushed 3.0 m at a constant velocity up a vertical wall by a constant force applied at an angle of 30.0
5 answers
asked by
ally
4,269 views
A bungee jumper of mass 60 kg jumps from a bridge tied to an elastic rope which becomes taut after he falls 10 m. Consider the
7 answers
asked by
anon
2,614 views
A 1000kg sports car accelerates from 0 to 25m/s in 7.5s what is the average power delivered by the engine?
i know that POWER=
5 answers
asked by
magic 8 ball
7,182 views
Determine elastic constant of a sqring if a force of 1N is strechred by 2.7cm
5 answers
asked by
Grace
603 views
I already figured out the answers to some but I need help with two more.
1) A disk with an initial angular velocity ω0 = 4.5
4 answers
asked by
Michelle
5,467 views
The first resonant length of a closed air column occurs when the length is 30.0cm . What will the second and third resonant
5 answers
asked by
Melissa
2,375 views
A 0.165-kg ball, moving in the positive direction at 10 m/s, is acted on by the impulse shown in the graph below. What is the
5 answers
asked by
Lisa
2,245 views
Two vectors A. and B have magnitude A = 3.00 and B = 3.00. Their vector product is A x B= -5.00k + 2.00i. What is the angle
6 answers
asked by
Jay
4,590 views
If you throw a ball straight up at 10 m/s and release it 2m above the ground:
a) What height will the ball reach V^2=u^2+2as
4 answers
asked by
Lisa
1,845 views
A particular photon has a wavelength of approximately 2 x 10-7m. What is the energy, in joules, associated with this photon?
A.
7 answers
asked by
Morgan
2,040 views
What is the equivalent resistance of a parallel circuit with a 5.0 kΩ resistor, a 2.5 kΩ resistor, and 10.0 kΩ resistor?
A.
5 answers
asked by
Me and I
3,605 views
An electric heater warms a large 0 degree Celsius block of ice at the rate of 200J/s . calculate the mass of the ice that melts
4 answers
asked by
Lala
1,832 views
By how much will the temperature of 2.00kg of air change if it absorbs all of the heat given up when 1.00kg of water cools from
4 answers
asked by
Saarah
837 views
a bomb is dropped from an airplane travelling horizontally with a speed of 300 mi/hr if the airplane is 10000ft. above the
6 answers
asked by
Andrea
3,846 views
A 25 kg child slides down a playground slide at a constant speed. The slide has a height of 3.0 m and is 7.0 m long. Using
5 answers
asked by
Lindsey
8,704 views
An object's moment of inertia is 2.5 kgm^2. Its angular velocity is increasing at the rate of 3.0 rad/s^2.
What is the torque on
4 answers
asked by
falcon306
2,355 views
A pendulum clock that works perfectly on Earth is taken to the Moon. (a)Does it run fast or slow there? (b) if the clock is
5 answers
asked by
steph
5,310 views
A block cedar has a mass of 200 kg and density of 570 what fraction of the wood will be surface of block is floating in water
4 answers
asked by
Robert
3,161 views
A billiard cue ball having velocity of 5.0 cm/s and a mass 0.17 kg approaches a stationary red billiard ball of
mass 0.16 kg. If
5 answers
asked by
Anonymous
2,743 views
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total
4 answers
asked by
Sam
4,516 views
A 1.50 kilogram cart travels in a horizontal circle of radius 2.40 meters at a constant speed of 4.00 meters per second.
Calculat
4 answers
asked by
JRUFFE
3,932 views
The magnification of a convex mirror is +0.65X for objects 2.8 m from the mirror. What is the focal length of this mirror?
5 answers
asked by
Anonymous
2,722 views
A 65 kg dancer leaps .32 m high.
a) With what momentum does the dancer reach the ground? b) What impulse is needed to make a
5 answers
asked by
Einstein
2,252 views
Two objects of masses m1 = 0.58 kg and m2 = 0.92 kg are placed on a horizontal frictionless surface and a compressed spring of
4 answers
asked by
sherry
3,110 views
An object is thrown downward with an initial velocity of 4 feet per second. The relationship between the distance s it travels
4 answers
asked by
Merty
2,004 views
A 52kg ice hockey player moving at 11m/s slows down and stops over a displacement os 8.0m.
Calculate the net force of the skater.
6 answers
asked by
Mike
2,930 views
A spiral spring stretches 4 cm when a mass of 0.5 kg is suspended from it. what is the spring constant?
4 answers
asked by
jamal
2,217 views
At time t >or= to 0, the position of a particle moving along the x-axis is given by x(t)= (t^3/3)+2t+2. For what value of t in
4 answers
asked by
Millie
3,496 views
Describe how the energy from a rotating flywheel can be transferred to moving parts of a child's toy.
7 answers
asked by
Sam
2,731 views
An aluminum rod is 21.5 cm long at 20°C and has a mass of 350 g. If 12500 J of energy is added to the rod by heat, what is the
5 answers
asked by
Erica--help!
3,075 views
Find the maximum height and the time of flight of a body fired vertically up from the ground given that it loses 60 percent of
4 answers
asked by
Aaz
1,926 views
An airplane is heading due east with an airspeed of 220km/h when it encounters a wind from the south at 76km/h. What is the
5 answers
asked by
Sara
1,957 views
All electromagnetic energy (light), including gamma rays through radio waves, has what in common?
A. Speed B. Wavelength C.
5 answers
asked by
Morgan
2,113 views
current through a device is 0.30 A, and the resistance in the device is 40 Ù. How many 1.5 V batteries are required to run the
4 answers
asked by
Pat
2,593 views
an electron in a mercury atom jumps from level a to level g by absorbing a single photon. determine the energy of the photon in
4 answers
asked by
Marty
4,228 views
How much applied force is needed to accelerate a 2.0 kg block of wood at 4.0m/s^2 along a rough table, against a 10 N force of
6 answers
asked by
Melissa
2,577 views
A roller coaster (375. kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two nonconservative forces are
3 answers
asked by
Anonymous
1,733 views
The steering wheel of a car has a radius of 0.18 m, while the steering wheel of a truck has a radius of 0.25 m. The same force
4 answers
asked by
Anonymous
3,042 views
A 20.0 kg block is being pushed forward on a flat surface with a force of magnitude 45.0 N against a frictional force of 13.0 N.
4 answers
asked by
Alyssa
1,740 views
Question 11 Unsaved
A car of mass 1200 kg travels along a horizontal road at a speed of 10 m s-1. At the time it begins to
4 answers
asked by
gared
2,800 views
Two positive charges, each of magnitude q, are on the y-axis at points y = + a and y = -a. Where would a third positive charge
4 answers
asked by
aichan
3,158 views
a lead bullet is placed in a pool of mercury. what fractional part of the volume of the bullet is submerged?
5 answers
asked by
Ashleigh
3,061 views
A roller coaster goes through a vertical loop. When are the forces on the riders: the smallest and the greatest?
5 answers
asked by
Kalab
1,256 views
1. A force of 40N at the end of a wire of length 4m and diameter 2mm process and extension of 0.24mm. Calculate; (a) stress on
6 answers
asked by
Emmanuel
3,055 views
A ball is thrown into the air with an upward velocity of 40 feet per second. Its height, h, in feet after t seconds is given by
7 answers
asked by
Hannah
3,939 views
A particle P of mass 2gms moves on the X-axis and is attracted towards origin O with a force numerically equal to 8x. If it is
5 answers
asked by
Vijaya
3,572 views
what should be the resistance of a heating coil which will be used to raise the temperature of 500 grams of water from 28
5 answers
asked by
Anonymous
1,763 views
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