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Physics
Page 52
Questions (146,476)
A 15-volt power supply is used to power a circuit with two resistors in series. The voltage drop across R1 is 5 volts. What is
5 answers
asked by
jasmine
2,475 views
figure 3.1 shows a rectangular concrete slab of weight 18000N. It rests on a brick wall and is the roof of a bus shelter. The
6 answers
asked by
Atta
4,038 views
Two resistors, one 12Ohms and the other 18 Ohms, are connected in parallel. What is the equivalent resistance of the parallel
5 answers
asked by
Rony
4,886 views
The temperature of an ideal gas in a 5.00 L container originally at 1.01 bar pressure and 25 °C is lowered to 220 K. Calculate
5 answers
asked by
Kat
2,272 views
What mass of liquid water a t room temperature (25°C) can be raised to its boiling point with the addition of 40.0 kJ of
6 answers
asked by
Anonymous
5,474 views
a light string 4 meters long is wrapped around a solid cylindrical spool with a radius of 0.075 m and a mass of .5 kg.a 5kg mass
5 answers
asked by
mariel
6,928 views
A hot-air balloon has a total mass of 720 kg. It accelerates downwards (towards the ground) at 2.7m/s^2 even though an upwards
5 answers
asked by
applebottom
2,503 views
A street light is mounted at the top of a 6 meter tall pole. A man 2m tall walks away from the top with a speed of 1.5 m/s along
5 answers
asked by
Erich
2,941 views
The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's
6 answers
asked by
Leah
4,368 views
A car runs at a constant speed of 15m/s for 300s and then accelerates uniformly to a speed of 25m/s over a period of 20s this
6 answers
asked by
Anonymous
1,327 views
A 500 g piece of silver at 150 degree Celsius is submerged in 1000 g of water at 5 degree Celsius to be cooled. determine the
5 answers
asked by
tobby
4,286 views
When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.6 m/s in 0.11 s .
Distance?
4 answers
asked by
S
3,608 views
The speed of light is 3.00x 10^8 m/s . How fast is this in miles per hour (miles/h)? Use the conversion . 1mile =1610m
6 answers
asked by
Okoye
26,003 views
Medical x rays are taken with electromagnetic waves having a wavelength around .1 nm. What are the frequency, period, and wave
5 answers
asked by
J
4,542 views
A small tiny nail may Pierce an inflated Tyre and remain there without pressure reduction.explain
9 answers
asked by
Anonymous
3,144 views
Water with a mass of 0.500 kg at 15.0 degree C is mixed with 0.800 kg of water at 35.0 degree C. What is the final temperature
5 answers
asked by
christy
4,216 views
The maximum load a beam will support varies directly with the square of the diagonal of the beam's cross section.A beam with
5 answers
asked by
Keonn'a
4,216 views
The weight of the atmosphere above 1 m^2 of Earth's surface is about 100,000 N. Density, of course, becomes less with altitude.
4 answers
asked by
C
6,503 views
The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water
5 answers
asked by
Kalley
3,657 views
The elastic potential energy E is given by E=C p^2 g^2 A l0^3,where p is the density of the metal.g is the acceleration of free
5 answers
asked by
chancy
4,035 views
What are the components of a vector of magnitude 1.5 m at an angle of 35 degrees from the positive x-axis?
5 answers
asked by
Kylee
4,136 views
A tennis player serves a ball horizontally, giving it a speed of 24 m/s from a height of 2.5 m. The player is 12 m from the net.
5 answers
asked by
Zyra
2,704 views
On a hot summer day, a young girl swings on a rope above the local swimming hole. When she lets go of the rope her initial
5 answers
asked by
Sean
4,423 views
A man opens a 1.14-m wide door by pushing on it with a force of 49.5 N directed perpendicular to its surface.
(a) What magnitude
5 answers
asked by
alba
4,024 views
2. A pool has an area A = 50 m2 and depth h = 2.5 m. The pool is filled with water to the maximum height. An electrical pump is
5 answers
asked by
Sean
4,481 views
A 140 g arrow is shot vertically from a bow whose effective spring constant is 500 N/m. If the bow is drawn 60 cm before
4 answers
asked by
ian
4,434 views
A bowling ball weighing 71.2 N is attached to the ceiling by a 3.80 m rope. The ball is pulled to one side and released; it then
10 answers
asked by
Sarah
9,354 views
what potential difference is required to pass 3.0 A through 28 ohm's
6 answers
asked by
pablo
3,573 views
20.) A piano has been pushed to the top of the ramp at the back of a moving van. The workers think it is safe, but as they walk
4 answers
asked by
Anonymous
4,815 views
A 55 kg skier is at the top of a slope that is 10.0 m high.
a) Set the zero level for gravitational potential energy at the
4 answers
asked by
Daniel Reinsnes
6,108 views
a steel strip clamped vibrated at one end vibration with frequancy of 50hz and amplitude of 8mm at the free end find (a)velocity
5 answers
asked by
USAINI SALISU.
1,361 views
A 3.00 gram lead bullet travels at a speed of 240 m/s and hits a wooden post. If half the heat energy generated remain with the
4 answers
asked by
Nina
3,397 views
A locomotive is pulling an empty freight car with a constant acceleration on a horizontal surface. The mass of the locomotive is
4 answers
asked by
bub
2,679 views
A radar gun was used to record the speed of a car (in feet per minute) during selected times in the first 2 minutes of a race.
5 answers
asked by
Deondre
4,079 views
a uniform beam 6.0 metre long and weighing 4kg rests on support at p and q placed left and right 1.0 metres from each end of the
26 answers
asked by
mary
8,409 views
A 10-volt power supply is used to power a circuit, producing a current of 2 A. If the total resistance of the circuit is
6 answers
asked by
jasmine
2,464 views
Both drawings show the same square, each of which has a side of length L = 0.86 m. An observer O is stationed at one corner of
4 answers
asked by
Anonymous
6,322 views
A simple pendulum consists of a 3 kg point of mass hanging at the end of a 2 m long light string that is connected to a pivot
7 answers
asked by
Kathrine
8,425 views
In a machine ,a load of 160Newton is lifted up by an effort of 25Newton.the velocity ratio is 8,what is the efficiency of the
5 answers
asked by
Jimoh Abdul rasheed
1,010 views
A 4.70 kg chunk of ice is sliding at 15.0 m/s on the floor of an ice-covered valley when it collides with and sticks to another
5 answers
asked by
marc
2,529 views
In loading a lorry a man lifts boxes each of weight 100N throughta height of 1.5 m. a)how much work does he do in lifting 1 box
7 answers
asked by
Luc
3,992 views
In the parallel circuit, if the current put out
by the battery is 3 A and the current through R1 is 1 A, what is the current
4 answers
asked by
Leslie
3,396 views
A 2.2 m-long string is fixed at both ends and tightened until the wave speed is 50 m/s.What is the frequency of the standing
7 answers
asked by
Unknown
5,206 views
a train leaves the station at a 0.0-m marker travel;ing with a constannt velocity of 36.0m/s
a) how many seconds later will the
7 answers
asked by
kerri
3,144 views
A source passing a stationary observer is emitting a frequency of 560 Hz. If the speed of sound is 345 m/s, what must speed of
4 answers
asked by
AlphaPlus
2,973 views
a plastic cube having 10cm floats on a fresh water.If the volume of the cube that is submerged in the water is 50% of its total
5 answers
asked by
Abraham
832 views
A drum of mass 100kg is rolled into the deck of a lorry 1.5m above a horizontal floor using a plank 4m long. Calculate the work
7 answers
asked by
Anonymous
1,430 views
As shown in the figure below, a skateboarder starts at point A on the ramp and rises to point B, a maximum height of h = 2.89 m
5 answers
asked by
Anonymous
7,105 views
In the afternoon, the decibel level of a busy freeway is 80 dB with 100 cars passing a given
point every minute. Late at night,
5 answers
asked by
Georgey
4,723 views
A spring has a force constant of 70000 N/m.
How far must it be stretched for its potential energy to be 21 J?
4 answers
asked by
Anonymous
3,675 views
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