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physics
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A 3kg mass experiences two vertical forces: 76.5 newtons pulling upward and 29.4 newtons pulling downward. What acceleration
1 answer
asked by
goober
310 views
A golfer hits a ball from the origin with an initial speed of 30.0 m/s at an angle of 50 degrees above the horizontal. The ball
2 answers
asked by
goober
619 views
Find the currents in the unbalanced Wheatstone bridge (Fig. 5.1). Assume that v0 = 1.5V,r1 = r2 = 100 ,r3 = 150,rx = 120,ra =
2 answers
asked by
Kedir
459 views
A typical problem in physics is that physical quantities can be calculated for a series of finite systems, but ultimately, we
1 answer
asked by
Kedir
382 views
Develop a subprogram to achieve the LU decomposition of a banded matrix with l sub diagonals and super diagonals with either the
1 answer
asked by
Kedir
359 views
When a block is dragged across a table by a string that is parallel to the surface of a table how much work is done by the
2 answers
asked by
goober
542 views
A body is projected horizontally with a velocity of 80m/s from the top of a tower 160m above the ground (given that
2 answers
asked by
ROKEEB
754 views
an object of mass 4kg moves in a circle of radius 6m with constant of 12m/s find the angular velocity
4 answers
asked by
Anonymous
786 views
An object is formed by attaching a uniform, thin rod with a mass of mr = 6.8 kg and length L = 5.68 m to a uniform sphere with
1 answer
asked by
Lis
823 views
A merry-go-round with a a radius of R = 1.95 m and moment of inertia I = 192 kg-m2 is spinning with an initial angular speed of
1 answer
asked by
Lis
597 views
A solid cylinder has a mass of M and radius R. If it rolls without slipping on a horizontal surface with a linear speed of v,
2 answers
asked by
anonymous
756 views
A yo-yo with mass M and radius R is wound with a light string. Someone drops it from rest with the string attached to a metal
2 answers
asked by
tyger2020
541 views
A uniform rod of mass M and length d is initially at rest on a horizontal and frictionless table contained in the xy plane, the
2 answers
asked by
tyger2020
1,009 views
a 1.45 kg ball is suspended from a 0.80m string and swung in a horizontal circle at a constant speed such that the string makes
4 answers
asked by
lmao
3,050 views
three point charges are located at the corners of a right triangle where q1=q3= 5uC,Q2= -2uC and r =10cm.(angle q1 q2q3=90 and
3 answers
asked by
ongiridavis
1,058 views
Two radioactive sources X and Y have half-lives of 3.0 hours and 2.0 hours, respectively. The product of the decay is a stable
3 answers
asked by
Valeriya
744 views
Car X passes car Y on a motorway. Car X is travelling at 1.5 times the speed of car Y. The mass of car X is 5/4 of the mass car
2 answers
asked by
Valeriya
594 views
Which of the following is/are responsible for the transfer of thermal energy from a candle flame: conduction, convection,
2 answers
asked by
Valeriya
554 views
An elastic cord can be stretched to its elastic limit by a load of 2N. If a 35cm length of the cord is extended 0.6cm by a force
2 answers
asked by
Florence
762 views
An engine removes 260 J from a reservoir at 385 K and exhausts 210 J to a reservoir at 200 K.
How much more work could be done if
2 answers
asked by
lis
558 views
When the Sun is directly overhead, a hawk dives towards the ground with a constant velocity of 5.1 m/s at 45° below the
2 answers
asked by
leo
828 views
Emily is testing her baby’s bath water and finds that it is too cold, so she adds some hot water from a kettle on the stove.
2 answers
asked by
Alex
813 views
A body of mass 20g is suspended from the end of a spiral spring whose force constant is 0.5N/m. The body is set into a simple
4 answers
asked by
poppy
1,990 views
A man exerts a pressure of 2.8 * 10³Nm^-2 on the ground and has 4 * 10^-2m² of his feet in contact with the ground. The weight
2 answers
asked by
poppy
474 views
A rocket of 30000kg mass acquires a speed of 2000k after takeoff. The power expended during this time is in 1minute?
3 answers
asked by
poppy
548 views
The ice point of an ungraduated mercury in glass thermometer is x while it stem point is 90°This thermometer read 60°when the
2 answers
asked by
poppy
722 views
A glass bottle full of mercury has mass 500g. On being heated through 35 degree census, 12.43 gram of mercury expelled.
3 answers
asked by
poppy
1,120 views
On an icy road, a 2100-kg car moving at 52 km/h strikes a 410-kg truck moving in the same direction at 35 km/h. The pair is soon
3 answers
asked by
Jay
1,621 views
Two identical trucks have mass 5400 kg when empty, and the maximum permissible load for each is 8000 kg. The first truck,
4 answers
asked by
Jay
3,581 views
a child desires to reach a point that is 3.4km from its present location and in a direction that is 35° north of east.however,
3 answers
asked by
poppy
495 views
Given three capacitors 0.3uF, 0.5 uF and 0.2 uF, the joint capacitance when arranged to give minimum capacitance is?
3 answers
asked by
poppy
1,057 views
If a force of 40N stretches a wire from 20m to 20.02m, what is the amount of force required to stretch the same material from
3 answers
asked by
poppy
462 views
If the relative density of gold is 18.2, the volume of 2.4kg of gold is
[Density of water = 103kgm-3]?
1 answer
asked by
poppy
353 views
During electrolysis, 2.0 g of a metal is deposited using a current of 0.4A in 6 hours. The mass of the same metal which can be
2 answers
asked by
poppy
534 views
A reistance thermometer has a resistance of 20w at 0°c and 85w at 100°c if it resistance is 52w in medium calculate the
6 answers
asked by
poppy
802 views
A 20V supply is connected with a resistor of 4.0A/s 200ohm in an a.c circuit find the phase angle in the circuit?
1 answer
asked by
poppy
396 views
An average of 120KW of electric power is sent to a small town from a power plant constant 10km away.the transmission lines have
4 answers
asked by
poppy
3,574 views
An airplane travel 1000k/h in a region where the Earth's magnetic field is about 5*10-5T.
what is the potential diffenrence
2 answers
asked by
poppy
499 views
A 2.50-kg object is moving along the x -axis at 1.60 m/s. As it S S passes the origin, two forces F 1 and F 2 are applied, both
2 answers
asked by
Jay
477 views
a 25 kg boy on a 10 kg sled is coasting at 3.0 m/son level ice toward 30kg sister the girls jumps vertically and lands on her
2 answers
asked by
diana
582 views
find the electrical enery expended by electric lamp labeled 100w in 8 seconds
2 answers
asked by
nicholas
572 views
explain to me how Wx = Wsintitha instead of Wcostitha.
P= Wx + F where F= FRICTIONAL FORCE W= weight component along the
1 answer
asked by
poppy👌🤔
285 views
Two vertical parallel conductors X and Y are 0.12m apart and carry currents of 2A and 4A respectively in a downward direction.
Dr
1 answer
asked by
poppy👌🤔
478 views
A car of mass 100kg travelling with a velocity of 20mls was suddenly brought to rest 20m after application of break, find the
4 answers
asked by
poppy👌🤔
500 views
what is the difference between an object of mass moving up a smooth inclined plane and that moving up a rough inclined plane?
1 answer
asked by
poppy👌🤔
404 views
In a carnival ride,passengers travel in a constant speed in a circle of radius 5m and make 1 complete revolution in 40s.
calculat
3 answers
asked by
poppy👌🤔
693 views
velocity of light in air and glass are 3.0*10^8m^-1 inverse 1.8*10^8m^-1 respectively one is for air and one is for glass.
find
1 answer
asked by
poppy👌🤔
409 views
A crate of mass 20kg was moved up a rough plane inclined at 60° to the ground. If the crate was moved up a distance of 5m after
2 answers
asked by
poppy👌🤔
703 views
A spring s, is fimly fixed at one end A and allowed to lie parallel to a plane inclined at 60° to the horizontal. If a body of
1 answer
asked by
poppy👌🤔
396 views
assume the specific heat capacity of water is 4.25lgk or 4200kj how many Joule is required to raise the temperature of 500g of
2 answers
asked by
poppy👌🤔
513 views
A uniform plank PQ is 10m long and weighs 2.5KN. A downward force of 10N is 2M from the end P and upward forces of 5N, 3N and 8N
2 answers
asked by
poppy👌🤔
581 views
describe an expirement to determine the specific heat capacity of the metal . state the precaution that should be taken and show
1 answer
asked by
poppy👌🤔
468 views
The formula 2^2n-1 denotes the nthe term of a sequence. which term of the sequence is 2^21
a). 11th b). 6th c). 10th d). 8th?
1 answer
asked by
poppy👌🤔
441 views
the wavelength of ultraviolet radiation is 400nm. if the speed of light in air is exactly 3*10^8m/s, then the frequency of the
1 answer
asked by
poppy👌🤔
386 views
the velocity ratio of an inclined plane whose angle is a I
a). VR=1/sinA b). VR=1/tanA c). VR=1/cosA d). VR=1/cotA?
1 answer
asked by
poppy👌🤔
350 views
which of the following units is equivalent to kgm/s
a). n/s b). nms c). ns d). j/s?
1 answer
asked by
poppy👌🤔
276 views
if a cell supplies a current of 0.5a when it's emf is 2v and internal resistance is 1 ohms calculate it's external resistance
a).
1 answer
asked by
poppy👌🤔
401 views
what is the resistance of a 240v, 60w electric filament bulb?
a). 0.25ohms b). 480ohms c). 60ohms d). 240ohms e). 960ohms?
1 answer
asked by
poppy👌🤔
433 views
which of the following is true of an electric charge?
a). positive charge means deficit of electrons. b). negative charges means
1 answer
asked by
poppy👌🤔
379 views
the force (f) in Newton requires to male an kbject of m of mass q travelling with velocity (k) turns in circle of radius p is?
1 answer
asked by
poppy👌🤔
269 views
800J of energy is required to pull a load of 600N to pull a distance of 1m.what is the mechanical advantage
1 answer
asked by
Anonymous
339 views
A source of light used for newton's ring experiment consist of two wavelength, wavelength 1 = 7500armstrong and wavelength 2 =
1 answer
asked by
poppy👌🤔
483 views
A uniform capillarity tube closed at one end contained dry air trapped by a thread of Mercury 8.5*10-2m long when the tube was
1 answer
asked by
poppy👌🤔
506 views
An object is projected vertically upwards. It’s height hm at time t seconds is given by
h=20t-3/2t^2 - 2/3t^3, find: a) the
2 answers
asked by
poppy👌🤔
573 views
The lower and super fixed point of a certain thermometer are 30cm apart.
At a certain clay the length of the mercury tread in the
2 answers
asked by
poppy👌🤔
544 views
calculate refractive index of a material if the incident ray is two third the reflected ray which is 60°?
1 answer
asked by
poppy👌🤔
390 views
a force of 40newton stretches a wire through 3.0cm.what force will stretch it through 5.0cm and through what length Will a force
2 answers
asked by
olatunji
567 views
a force of 40n is applied at the end of a wire 4m long and it produces an extension of 0.24mm. if the diameter of the wire is
2 answers
asked by
kenneth
566 views
A force F=(5i+3j)N acts on a body and causes a displacement r=(7i-j)m. Determine the work done?
4 answers
asked by
brain Mac
1,243 views
Three forces of magnitude 15N, 10N and 5N act on a particle in the direction which make 120° with one another. Find the
4 answers
asked by
brain Mac
2,434 views
the density of 400cm³ of palm oil was 0.9gcm before frying, if the density of the oil was 0.6gcm^-³ alter frying, assuming no
3 answers
asked by
CEO
596 views
a radioactive sample has a half-life of 4.0 min. what fraction of the simple is lefts after 20min?
2 answers
asked by
CEO
571 views
the angle of incidence in a glass block experiment was 35. what is the angle of refraction if the refractive index of the glass
2 answers
asked by
CEO
746 views
What is the correct representationfor an atom x with 28 electrons and 30 neutrons.?
1 answer
asked by
CEO
447 views
kg mass moving with a speed of 30 of 30ms-1 is brought to rest in 2.5sec, calculate the magnitude of the constant retarding
3 answers
asked by
Anonymous
511 views
300 grams of led at 200 degrees celcius is dropped into 150 grams of water at 10 degrees celcius. if the final temperature is 20
1 answer
asked by
mike
439 views
A radioactive isotope has a decay constant of 10^-6( ten rise to power negative six).Calculate it's half -life. Please explain
1 answer
asked by
FBI
377 views
A galvanometer of resistance 20 ohms is to be provided with a shunt that 1/10 of the whole current in acircuit passes through
2 answers
asked by
FBI
579 views
One mole of a hydrocarbon containing 48g of carbon. If itvapour density is 28,the hydrocarbon is? Please explain your answer
1 answer
asked by
Don Morris
406 views
An electric heater converts 1KJ of electrical energy to heat energy every 2 second with 100%efficiency. The power produced is.
1 answer
asked by
Osama fatimah
375 views
If a boy swims horizontally at the surface of a pool filled with water to a depth of 4.5m. what pressure due the water will be
1 answer
asked by
Don Morris
382 views
A car of mass 500kg travelling at 36km/hr brought to rest over a distance of 20m calculate
1.The average retardation 2.The
4 answers
asked by
Temiloluwa
1,169 views
A motor of mass30kg moving with a velocity of 10m/s by application of brakes is brought to rest in a distance of 25m .find the
2 answers
asked by
Temiloluwa
1,174 views
What is the centripetal force of a mass, 0.000025kg revolving around the earth with radial acceleration of 4000m/s2?
1 answer
asked by
Don Morris
263 views
The length of copper and an iron wire is 500m at 0^0c. Determine the difference in their length at 30^0c
1 answer
asked by
lucky
355 views
1) A bartender slides a beer mug at 1.4 m/s towards a customer at the end of a frictionless bar that is 1.8 m tall. The customer
3 answers
asked by
Anonymous
830 views
Use the concepts of force, acceleration, and speed to explain how a parachute works.
Make sure your answer explains how
3 answers
asked by
anon
670 views
Explain the difference between an object or a person free-falling without a parachute
and with a parachute. Use your free-body
2 answers
asked by
anon
838 views
A boy picks up a bowling ball. Which of the following choices correctly describes the interaction between the boy and the
3 answers
asked by
anon
1,617 views
The pressure on a fluid at rest in a pipe increases by 20 Pa. How does this change in pressure affect the pressure on the fluid
2 answers
asked by
anon
632 views
a metre rule is found to balance horizontally at 48cm mark .when a body of mass 60g is suspended at d 6cm mark ,the balance
1 answer
asked by
anu
815 views
If a bat with a mass of 5 kg and acceleration of 2 m/s2 hits a ball whose mass is 0.5 kg in the forward direction, what is the
2 answers
asked by
anon
527 views
1.calculate the work done on a capacitor of capacitance of 200uF, when a potential difference of 100v is applied
2.find the area
2 answers
asked by
Maballs
589 views
the period for 12 successive crest view, if the time for 20 revolution of stroboscope 15(s)?
1 answer
asked by
Maballs
272 views
A Corolla starts 200m west of the town square and moves with a constant velocity of 15 m/ s tow ard the east. Draw a graph that
2 answers
asked by
inja
839 views
a stone is attached to the end of an inelastic string and whirled in a circular path of radius of 30cm if the stone makes
2 answers
asked by
Anabelle
646 views
What happens to the motion of a skydiver when they reach terminal velocity?
Please help! I can't find anything to help me answer
1 answer
asked by
ava
390 views
with what orbital speed will a satellite circle Jupiter if placed at a height of 7.80 * 10 ^ 6 m above the surface of the
1 answer
asked by
lisa
632 views
tarzan swings from a vine whose length is 10m in a vertical circle under the influence of gravity .when vine make an angle of 20
2 answers
asked by
Anonymous
488 views
l need answers with the aid of scale drawing
1 answer
asked by
success
291 views
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