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Physics
Page 57
Questions (147,393)
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
1,961 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
2,116 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
4,231 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
2,583 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
1,736 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
3,047 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
1,743 views
A metal block of mass 5kg lies on a rough horizontal platform. If a horizontal force of 8 N applied to the block through its
11 answers
asked by
Diana princess
4,356 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
2,804 views
1) a wire of length 1m has a resistance of 2 ohm.obtain the resistance if specific resistance is double,diameter is double and
4 answers
asked by
Rose
3,419 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
3,161 views
a 0.75 kg mass attached to avertical spring streches the spring 0.30m. what is the spring constant? the mass-spring system is
6 answers
asked by
marco
5,652 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
3,942 views
A car starts 200 m west of the town square and moves with a constant velocity of 15 m/s toward the east.
a.Write the equation
5 answers
asked by
Shelly
7,019 views
A boy fires a 60 g pebble with his slingshot. The pebble leaves the slingshot at 35m/s
How high above the slingshot will the
5 answers
asked by
Melissa
2,986 views
a body covers a circular path of radius 'R' in 20 seconds.calculate the distance and displacement of the body at the end of 70
5 answers
asked by
pratik yadav bansal public school
3,252 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
1,768 views
compared to the period of a wave of red light the period of green light is...
A)less B)greater C)the same D)none of the above
4 answers
asked by
help!!!
2,530 views
Wile E. Coyote is holding a “HEAVY DUTY ACME ANVIL” on a cliff that is 40.0 meters high. The Roadrunner (beep-beep), who is
6 answers
asked by
Jin
4,833 views
10. A 3 kg block moves up a 40° incline with constant speed under the action of a 26N force acting up and parallel to the
5 answers
asked by
Anonymous
2,669 views
The driver of a train traveling at 30 m/s applies the brakes when he passes an amber signal. The next signal is 1.5 km/h down
4 answers
asked by
Anonymous
2,093 views
How can the atomic orbital be described in the quantum mechanical wave model of the orbitals?
A. A collection of balloons B. A
7 answers
asked by
Morgan
1,602 views
A student has a weight of 650 N. While riding on a roller-coaster this same student has an apparent weight of 1.97 x 103 N at
5 answers
asked by
Eve
5,046 views
Jada throws a rock horizontally from a bridge 32 m above the water, which hits the water approximately 25 m from a point
4 answers
asked by
Anonymous
2,010 views
A 70-kg fisherman in a 138-kg boat throws a package of mass m = 15 kg horizontally toward the right with a speed of vi = 4.8 m/s
4 answers
asked by
Taylor
10,456 views
A ball is thrown straight up into the air with a velocity of +20.5 m/s. Find the velocity of the ball after 2.5 s.
4 answers
asked by
Leasha
1,572 views
A 24L sample of a gas at fixed mass and constant temperature exerts a pressure of 3.0 atm. What pressure will the gas exert if
5 answers
asked by
catherine
3,277 views
Explain why an object that moves round a complete circle will have an angular displacement of 2 pi radians but tangential
4 answers
asked by
Anonymous
1,288 views
Ship A is moving east at 20 miles per hour, while ship B is moving north at 15 miles per hour. At noon ship A was 5 miles east
4 answers
asked by
Allie
2,926 views
A machine of efficiency 80% is used to raise a load of body of mass 75kg through a vertical height of 3m in 30seconds.Calculate
7 answers
asked by
Angela
4,883 views
Hi, can anybody provide some hints in how to approach these questions? I've been stuck on it for days!!! Thank you in advance!!
N
5 answers
asked by
Tommy
6,709 views
radius R of the orbit of a geosynchronous satellite that circles the earth. (Note that R is measured from the center of the
5 answers
asked by
cara
3,443 views
An 8 g bullet is shot into a 4.0 kg block, at rest on a frictionless horizontal surface. The
bullet remains lodged in the block.
7 answers
asked by
Georgey
10,871 views
A)A block rests on a horizontal frictionless surface. A string is attached to the block, and is pulled with a force of 60.0 N at
4 answers
asked by
Tsion
2,783 views
An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal.
5 answers
asked by
Anonymous
1,943 views
A small mailbag is released from a helicopter that is descending steadily at 1.01 m/s.
(a) After 4.00 s, what is the speed of the
5 answers
asked by
roger
12,596 views
At a low point in its swing, a pendulum bob with a mass of 0.2kg has a velocity of 4m/s. Ignoring air resistance, how high will
4 answers
asked by
Mary
4,367 views
An aeroplane is travelling horizontally at a speed of 80ms and drops a crate of emergency supplies.To avoid damage,the maximum
4 answers
asked by
Shanti
1,973 views
An airplane flies 200 km due west from city A to city B and then 260 km in the direction of 32.0° north of west from city B to
5 answers
asked by
Shetina
3,445 views
a) Find the angular velocity of a wheel that rotates 6 times every 4 seconds.
b) What is the tangential velocity of the outside
5 answers
asked by
Martin
2,561 views
What is the rotational speed of the hour hand on a clock?
-----rev/s
4 answers
asked by
Sue
2,260 views
A projectile is launched with an initial speed of 59.0 m/s at an angle of 32.0° above the horizontal. The projectile lands on a
4 answers
asked by
Mary
2,047 views
In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is
4 answers
asked by
Lola
2,170 views
How much force is needed to bring a 3200 lb car from rest to a velocity of 44 ft/s in 8 seconds? Please indicate the formula
5 answers
asked by
Hale
1,701 views
A ferris wheel rotates at an angular velocity of .036 rad/s. At t=0min your friend Seth is at the very top of the ride. What is
5 answers
asked by
Sarah
3,044 views
A sample of pure cobalt-60 has an activity of 8 µCi.
(t1/2 cobalt-60 = 5.26 a) (a) How many atoms of cobalt-60 are present in
4 answers
asked by
Trixie
808 views
What is the explanation for the discrete lines in atomic emission spectra?
5 answers
asked by
Rebecca
3,674 views
For the potential-energy diagram in (Figure 1), what is the maximum speed of a 5.0 g particle that oscillates between x = 2.0 mm
4 answers
asked by
alen
2,364 views
Two cars are moving with a constant speed towards finish marker, car A is moving from the north at 16km/hr and car B is moving
4 answers
asked by
Arsh 2
909 views
A hunter shoots an arrow at a deer running directly away from him. When the arrow leaves the bow, the deer is at distance of 42
4 answers
asked by
Cassidy
1,575 views
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