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A wire length 2m and radius 1mm is stretched by 25mm on application of a force of 1000N.Calculate the young modulus
2 answers
asked by
Rilwan
598 views
body is at equilibrium under the action of three forces.one force is 10N acting due east and one is 5N in the direction 60¡ã
5 answers
asked by
Muhammad
847 views
The switch in the circuit shown in the figure below is closed, and the lightbulb glows steadily. The inductor is a simple
1 answer
asked by
ricky
1,309 views
The pressure, volume, and temperature of an ideal gas are given respectively as P1, V1, T1. what is the volume V2 of the gas if
3 answers
asked by
Kenry
478 views
Your friend doesn't believe you when you tell her that the acceleration due to gravity on earth is the same for both light and
4 answers
asked by
Morgan
591 views
A 5kg object travelling at 0.1m/s collides head on with 10kg object initially at rest. Determine the velocity of each object
4 answers
asked by
Evans
1,088 views
A football is kicked at an angle of 45° to the horizontal over a defence line up with a velocity of 15m/s. Calculate the
4 answers
asked by
Ray
1,497 views
The “reaction time” of the average automobile driver is about 0.7 s. (The reaction time is the interval between the
10 answers
asked by
Babygirl
2,822 views
During a typical afternoon thunderstorm in the summer, an area of 76.0 km2 receives 1.42 * 10^9 gal of rain in 18 min. How many
3 answers
asked by
Carl
2,408 views
Which of the following determine the terminal speed of an object?
Object's density Color Weight Relative speed between the object
3 answers
asked by
Cameron Lawrence
1,001 views
What is the average density of the earth? The earth has a mass of 5.98x10²⁴ kg. The average diameter of the earth is
4 answers
asked by
Anonymous
1,469 views
Three point charges of 2microcoulomb,-3microcoulomb,and -3microcoulomb are kept at the vertices A, B and C respectively of the
4 answers
asked by
Iba
1,388 views
An elastic change of all constant 2000permeter undergoes a strain of 0.02 Under a load of 20N.
What is the natural length of the
4 answers
asked by
Sebastian
812 views
find the first, second and third derivative of : sin3x^2?
4 answers
asked by
Brain box
1,655 views
find the magnitude of the sum of these two vectors- 5.00m on A on the line. B 6.00m 30degrees.
4 answers
asked by
damien
2,849 views
The heat in unit H produced by a battery current is directly proportional to time t and the square of the voltage v and
5 answers
asked by
Venessa Benson.
860 views
An original hydrometer of mass 28g
Floats with 6cm of its stem out of water. The area or cross-section of the stemost is
4 answers
asked by
Happy
819 views
A metre rule is found to balance horizontally at the 48cm mark. When a body of mass 60g is suspended at the 6cm mark the balance
4 answers
asked by
David Cameron
2,005 views
calculate the length which corresponds to a temperature of 10°C has a linear expansivity of 2*10^-5K^-1. calculate the length
1 answer
asked by
Robotic
388 views
An exercise machine indicates that you have worked off 2.1 calories in a minute and a half of running in place. What was your
3 answers
asked by
Erin
1,029 views
A 155 g aluminum cylinder is removed from a liquid nitrogen bath, where it has been cooled to -196 degrees c. The cylinder is
4 answers
asked by
Erin
818 views
What is the magnitude of the resultant velocity for a bird flying first at a speed of 10m/s North East and then flying to south
7 answers
asked by
Wayessa
2,059 views
A body moving with uniform acceleration has two points (15,15) and (20,16) on the velocity -time graph of its motion. Calculate
4 answers
asked by
Johnny sean
731 views
An archer standing on a cliff 48m above the level field below shoots an arrow at an angle of 30° above the horizontal with a
4 answers
asked by
Zobo
2,812 views
an electrical appliance take 5A when operated on a 220V supply. If the appliance is operated from 6am - 6am at 10kobo per KWh
5 answers
asked by
Black mamba
1,021 views
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. Later, an acorn
4 answers
asked by
Nikki
4,537 views
A circuit contains a resistor in series with a capacitor, the series combination being connected across the terminals of a
3 answers
asked by
Coco
3,821 views
A circular coil of radius 40mm is found to produce a field 12.1 × 10^-6T at a point 30mm along its axis.
1- What is the
3 answers
asked by
El chapo
759 views
A body vibrates in SHM (simple harmonic motion) with the frequency of 50HZ and an amplitude of 4cm, find the (a) the period (b)
5 answers
asked by
Sarah Banks
2,791 views
if Sn is the first n terms of a series given by Sn2-1 find the nth terms
2 find the sum of all numbers between 5 and 130 which
1 answer
asked by
Maballs
309 views
A uniform bar AB is balanced on a knife edge which is 60cm from B by a mass of 22g which hangs at C 20cm from A. Calculate the
3 answers
asked by
Miracle
659 views
A jet airliner moving initially at 369 mph
(with respect to the ground) to the east moves into a region where the wind is blowing
3 answers
asked by
Vivian V
1,941 views
A transparent rectangular block 3.0cm thick is placed on a black dot. The dot when viewed from above is seen 2.0cm from the top
3 answers
asked by
Maballs
714 views
Two cars approach each other; both cars are moving westward, one at 78 km/h, the other at 64km/h.
A) what is the velocity of the
4 answers
asked by
Ashley
791 views
I need the answers
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 453 N
3 answers
asked by
Anonymous
464 views
A ball thrown vertically upwards from ground level hits the ground after 4s. Calculate the maximum height it reached during
3 answers
asked by
Abdullahi
1,088 views
A body moves in a circular orbit of radius 4R round the earth . Express the acceleration of free fall to gravity of the body in
4 answers
asked by
samba mambo
686 views
A uniform meter rod of weight 40N has a piece of metal of weight 20N attached to one of its end. The centre of gravity of system
3 answers
asked by
Azeezat
1,876 views
A moving object takes off from a town p(latitude 40°N ,longitude 52°E) and after flying 1450km due East,it reaches a town Q.it
5 answers
asked by
Prof lambchop
798 views
There is a cylinder and a ramp with a towel(lots of friction). The cylinder is giver a push up the ramp with the towel and it is
1 answer
asked by
Apple Ann
342 views
A hoist powered by a 10 kw motor is used to raise a bucket filled wirh concrete and having total mass of 500 kg to height of 80
4 answers
asked by
3b
919 views
A man pushes a drum of oil 10kg up an incline 0A.if 0A is 5m and AB is 3m.What is the potential energy of the drum at A?
7 answers
asked by
Osobase Juliet
1,839 views
A relative density bottle weight 20g when empty, 80g when field with water and 100g when with a liquid. Fine the relative
4 answers
asked by
Ahmad
1,201 views
Sheila and her toboggan have a total mass of 45 kg. At one point during her toboggan ride down a frictionless hill, she is 10.0m
4 answers
asked by
Zara
1,071 views
A 6.0 kg object at rest explodes into two parts. If part A has mass 2.0 kg and a velocity of 18.0 m/s right, what is the
4 answers
asked by
Dorian
463 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
1,336 views
A blue and a green billiard ball, each with a mass of 0.15 kg, collide directly. Before the collision, the blue ball had a speed
6 answers
asked by
Jack
2,349 views
An object is acted upon by two forces of 5N and 12N .calculate the resultant of the two vector if the force act perpendicular to
3 answers
asked by
Onyinye
901 views
A boy drops a coin from the top of a tower 50 metres high find the time taken by the coin to reach the ground
4 answers
asked by
Samarth bhayani
2,112 views
A body of mass 10 kg moving with velocity of 10m/s had hits a stationary body and had its direction reversed and velocity
3 answers
asked by
Anonymous
1,175 views
A box of mass m=10 kg rests on a surface inclined at 0=30° to the horizontal. It is connected by a light weight cord which
4 answers
asked by
Eddie
628 views
A ball of mass 0.3kg moving at a velocity of 20.ms-1 is suddenly hit by a force of 5N for a tie of 0.3sec. Find its new velocity
1 answer
asked by
Kehinde
352 views
In order to weight a boy in the laboratory a uniform plank of wood A B 3.0m long, having a mass of 8.0kg is pivoted about a
4 answers
asked by
Sekou
726 views
A diver runs along a horizontal cliff top of a large lake. She makes contact with the water 1.40 s after leaving the cliff and
4 answers
asked by
Ben
333 views
The resistance of a given electric device is 46 ohms at 25°C. If the
temperature coefficient of resistance of the material is
4 answers
asked by
Dale
1,191 views
A charge is moved from one point to another in an electric field. Explain briefly the relationship between electric potential
1 answer
asked by
J
348 views
A concrete block of mass 35kg is pulled along a horizontal floor with the aid of a
rope inclined at an angle of 30° to the
4 answers
asked by
Anonymous
1,355 views
When Jeff ran up a hill at 7.0 m/s, the horizontal component of his velocity vector was 5.1 m/s. What was the vertical component
4 answers
asked by
B
1,173 views
A rope of length L = 0.60 m, and mass m = 160 g is under tension T = 200 N. Assume that both ends are nodes. (a) Find the three
1 answer
asked by
Odunayo
372 views
A process generates 250 watts of useful energy and 600 watts of waste energy. What is the efficiency of the process?
A) 29% B)
5 answers
asked by
Cool
1,068 views
A block attached to a spring oscillates in simple harmonic motion along the x-axis between the two extremes, x = 10 cm and x =
3 answers
asked by
Abed
1,193 views
What is the horizontal and vertical components of a cat's displacement when it has climbed 5 m directly up a tree?
3 answers
asked by
Ashkan
646 views
A hockey puck has a coefficient of kinetic friction of μ = .10. If the puck feels a normal force (FN) of 5 N, what is the
4 answers
asked by
Berkley
850 views
A train moves with a speed of 54km/h for one quarter minute. find the distance travelled by the train
1 answer
asked by
Anonymous
316 views
How long does it take a car to change its velocity from 15m/s to 25m/s if it accelerates uniformly at 5m/s^2
1 answer
asked by
Thomas
199 views
The sound wave produced by a trumpet has a frequency of 440 hertz. what is the distance between successive compressions in this
4 answers
asked by
Mostafa
806 views
You are fishing in a boat anchored in a bay. You notice that the current is in the eastern direction with small wave crests that
3 answers
asked by
I NEED HELP 😫
696 views
A small boat weighs 1000 Newton.It is floating in water.
1)What is the upthrust on the boat? 2)What is the weight of water
3 answers
asked by
Fayelyne Onmangen
288 views
A simple machine is able to move s 400N load a distance of 20cm when a force of 20N is moved through a distance of 5.0m.
4 answers
asked by
Anonymous
641 views
Object A has a temperature of 3t. It comes in contact with object b,which has a temperature of 2t. Which of the following is
4 answers
asked by
..
783 views
An arrow is shot into the air with an initial velocity of 100m/s at an elevation of 60 degree find,the time of flight, the
2 answers
asked by
Anonymous
171 views
A boy of mass 40kg and a girl of mass 30kg play on seesaw of negligible weight if the boy sits 3m from the pivot where must the
3 answers
asked by
Anonymous
128 views
A pump is needed to lift water from a well though a height of 3.0 m at a rate of
0.6kg/min. What must be the minimum power of the
4 answers
asked by
Oscar chilembo
763 views
A spiral spring extends from 10.00cm to 10.01cm when a force of 20N is applied to it .
Calcite the force of spring.
1 answer
asked by
Gideon Arthur
98 views
A student records the mass of objects A, B, C, and D. Then the velocity of each object is measured using a track and timer. Does
7 answers
asked by
Hewitt
491 views
Scientists seek to acquire knowledge and understanding of the real world through the formulation, testing, and evaluation of
4 answers
asked by
Hewitt
298 views
A 60 kg skier with an initial velocity of 12 m/s coasts up a hill. At the top of the hill, the skier is traveling at 9.75 m/s.
4 answers
asked by
Hewitt
142 views
Find the acceleration of a body of mass 5kg which receives a force of 20N
1 answer
asked by
Foluso Deborah Ayomide
85 views
Find the tractive force of a train of mass 50,000kg which accelerates uniformly from rest until it attains a speed of 20m/s over
1 answer
asked by
Foluso Deborah Ayomide
94 views
An engine was used to raise 120 kg of water through a height of 40m in 25s. Calculate the power of the engine (g=10ms)
1 answer
asked by
Uchenna jecinta
82 views
A 575-g steel hammer, with a specific heat capacity of 460 J/kg°C hits a titanium block at 14 m/s. If all the kinetic energy of
3 answers
asked by
????
115 views
150g of ice at 0c is mixed up with 300g of water at 50c calculate the temperature of the mixture.
1 answer
asked by
Stella
105 views
A brass measuring rule is coRRect at 15°c,The volume is oBTAIN when the object is measure with THE RULE AT 35°c
Appears to be
2 answers
asked by
Joshua
121 views
The wavelengths of visible light vary from about 300 nm to 700 nm. What is the range of frequencies of visible light in a
4 answers
asked by
Iwannaknow
303 views
In a ballistic pendulum a bullet of mass 10kg is fired horizontally with a speed into a large wooden stationary block of mass
3 answers
asked by
ANDRIAN LANGAI
123 views
What is one way that light waves differ from sound waves?(1 point)
Which answer is the best option? a) Light waves do not require
4 answers
asked by
Iwannaknow
364 views
As waves move through water, the water at any point rises and falls. At a given moment, two points along the wave’s line of
4 answers
asked by
Iwannaknow
213 views
The lowest frequency that we can hear is about 20 hertz. If the speed of sound in air is 340 meters/second, what is the
3 answers
asked by
Iwannaknow
364 views
The table shows the speed of ultrasound waves in different tissues in the human body.
Tissue Speed (m/s) Air 330 Fat 1,450 Water
3 answers
asked by
Iwannaknow
267 views
If a wave transfers from one medium to another medium with different properties, which statement is true?(1 point)
Which of the
1 answer
asked by
Iwannaknow
337 views
when tuning a piano, amusician plays a note that should be at 110Hz while at the same time tapping a 110Hz tuning fork and
3 answers
asked by
Anonymous
1,093 views
Hello, can someone please check my answers and tell me if they are correct?
1. A laser produces a pulse of light with a speed of
2 answers
asked by
Jon - Please check my answers
617 views
what mass of ice at -14'c will be needed to cool 200cm3 of an orange drink (essentially water) from 25'c to 10'c!
(specific
3 answers
asked by
Busola
984 views
Two blocks at rest on a frictionless inclined surface with mass of 3kg on a side inclined at 42° to the horizontal and mass
1 answer
asked by
Dami
492 views
What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 1.3 meters?
4 answers
asked by
Anonymous
1,443 views
QUESTION: A car goes around a circular track with a radius of 1000 m at a constant speed of 10 m/s.
(a) How long does it take the
1 answer
asked by
Necie
438 views
A train which is moving with uniform acceleration is observed to take 20 and 30 seconds to travel succesive 0.4km.how much far
1 answer
asked by
Ravi
469 views
What is power output of a 60 kg person who walks up a 4 meter flight of stairs in 4.0 seconds?
3 answers
asked by
Anonymous
573 views
Many astronomers argue that the Earth and Moon should be considered a double planet,since the gravitational force by the sun on
1 answer
asked by
Abdurhman
943 views
Can someone add me on skype and tell me answers to my physics test tomorrow, I pay good?
1 answer
asked by
426 views
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