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Physics
Questions (182)
An electric current of 2 amperes flows in a heating coil of resistance 50 ohms for 3minutes 20seconds.determine the heat
1 answer
40 views
Copper of thickness d is placed on the cathode of copper voltameter.if the total surface area of the cathode is 60cmsquare and
1 answer
38 views
figure 2.31 show how the velocity of four cars changed as they travelled along a srtaight rode Give reasons for your answer to
1 answer
233 views
A body is under the action of two forces 7N And 10N find the resultant of the two forces if
(a)the forces are parallel and act in
0 answers
156 views
A car moving at 12m/s crashes into a tree and stops in 26ms. Calculate the force the seat belt exerts
on a passenger in the car
1 answer
389 views
There is a roller coaster cart with a mass of 300 kg (this is including passengers) and it is moving at 20 m/s at point A and 5
0 answers
292 views
Identify the force that is providing the centripetal force when a car is turning a corner. Be precise in your answers and be
1 answer
246 views
Is there a way to know the power of a fridge if the current of 4.5 A and voltage of 115 volts is given?
1 answer
196 views
Determine the mass of the pump when the water is projectead at acceleration of 10MIS2
2 answers
198 views
in order to weight a boy in the laboratory a uniform plane of wood ab 3cm long having a mass of 8.0kg is pivoted about a point.
0 answers
321 views
Two forces 1200N and 1400N are acting on the angle of 51.3 and42 respectively what is the equilibrium force?
1 answer
240 views
A rock is kicked horizontally at a speed of v=5.83 m/s from the edge of a cliff. The rock strikes the ground 48.o1 m from the
1 answer
374 views
A motorcycle has a velocity of 15 m/s due south as it passes a car with a velocity of 24m/s due north. What is the magnitude and
2 answers
1,031 views
A force of 10 N causes a spring to extend by 20 mm find A the spring constant of the spring in N /m B the extension of the
1 answer
293 views
A wave completes 75 cycles in 25 s. What is its period ?
1 answer
768 views
An areoplane lands on raw way with a velocity of 50m/s square and then e at 10m/s square with a velocity 2m/s.calculate the
0 answers
185 views
Two carts, one of mass 2kg and another of mass 4kg are driving towards each other with a speed 3m/s. Assume the mass 2kg is
1 answer
647 views
Gas mixture contains 2.50 mol of O2 and 3.00 mol of Ar.
Part A What is this mixture's molar specific heat at constant volume? Cv
0 answers
401 views
A 50-g ice cube at is placed in an equal mass of water. What must the initial water temperature be if the final mixture still
0 answers
1,062 views
A crate of fruit with a mass of 37.5 kg and a specific heat capacity of 3800 J/(kg⋅K) slides 7.60 m down a ramp inclined at an
2 answers
5,332 views
If your mass is 71 kg, what is the minimum number of calories you would "burn off" climbing a 2100 m-high mountain? Note: The
1 answer
467 views
A piece of copper at 280 C is dropped into 1.1 kg of water at 25 C.
If the equilibrium temperature is 30 C, what is the mass of
1 answer
613 views
A black wood stove with surface area 4.6 m^2 is made from cast iron 4.0 mm thick. The interior wall of the stove is at 650 C,
0 answers
970 views
How much heat is required to raise an 850g copper pan from 18C to 85C if
(a) the pan is empty? (b) the pan contains 1.9kg of
0 answers
733 views
You’re having your home’s heating system replaced, and the heating contractor has specified a new system that supplies
1 answer
532 views
What’s the specific heat of a material if it takes 6.5 kJ to increase the temperature of a 1.8 kg sample by 6.4 ∘C ?
1 answer
497 views
Name five distinct disciplines of physical sciences
1 answer
537 views
Two forces acting in the opposite direction have a resultant of 10N. If they act at the right angles to each other the resultant
3 answers
1,403 views
If A vector = B vector + C vector and the magnitude of A,B and C are 5,4 and 3 units respectively the angle between A and C is
1 answer
389 views
If three vector A.B and c are 12,5,13 in magnitude such that c vector = A vector + B vector ,then the angle between A and C is
1 answer
477 views
Two forces have magnitude in the ratio 3:5 and the angle between their directions is 60°. If their resultant is 35N their
1 answer
587 views
A 3kg mass has a speed of 5.0m/s at the bottom of a 37 degree incline. How far up the incline does the mass slide before it
1 answer
466 views
Can 8.9×10-19 be given to a conductor?
1 answer
274 views
A Ball of Mass 0.5kg Moving At 10m/s Collide With Another Ball Of Equal mass At Rest.If The Two Balls Move Together After The
5 answers
2,999 views
A balloon has a weight of 1250 N, and the lifting force on it is 3525N. If the air resistance is 15N, what is the acceleration
1 answer
419 views
1.13g plastic stopper is attached to a 0.93-m string. The stopper is swung in a horizontal circle, making one revolution in
2 answers
858 views
A car is accelerated from rest to a speed of 35m/s over a distance of 18m. What is the car's acceleration?
okay so I thought that
1 answer
451 views
A student sits in the school bus traveling to her school. If the student stands up and moves at 1.5m/s toward the rear of the
1 answer
459 views
A student sits in the school bus traveling to her school. If the student stands up and moves at 1.5m/s toward the rear of the
1 answer
677 views
A swimmer wants to swim at a speed of 3 m/s north across a river flowing at 0.8m/s,east. What is the actual direction and
1 answer
414 views
during a race,a dragster is 200 meters from the finish line when something goes wrong and its stops accelerating.it travels at a
2 answers
3,452 views
A charge q equals to 3.4c is located at x equal 2m and y equal 2m and a second charge q2 equal to 2.7c is located at x equal 4m
0 answers
403 views
A model rocket was launched Amazon man of its height and horizontal distance from launch pad where they can as shown in the
0 answers
378 views
A cyclist starts from rest and accelerates at 2m/s2, for 2second. Her velocity remains constant for the following 4second. The
3 answers
1,514 views
A car is driving with a velocity of 108km/h suddenly a child crosses the road 100m in frond of the car. the driver applies
4 answers
1,303 views
I need physics help. I don't understand how to do these questions. Can someone show me what I should use? and explain. I'll do
2 answers
801 views
A bus of mass 2500kg goes round a corner of radius 50m at a speed of 5m/s. what force is needed for the bus to go round the
2 answers
896 views
What are some good websites/youtube videos for learning grade 12 Physics - Dynamics strand: Kinematics (1D & 2D motion),
1 answer
719 views
So this is the problem:
A comet is in an elliptical orbit around our Sun. At its point of closest approach, it is moving at
0 answers
572 views
You are driving on a very long, very straight 2 lane road, stuck behind a lorry which travels at a constant 75 km/hour. You want
0 answers
650 views
Emily makes 0.250 kg of hot tea at 99.0°C. How much ice at 0.00°C must she add to the tea so that the mixture reaches a final
2 answers
1,291 views
Consider a classroom 10.0m long by 6.0m wide by 4.0m high at "room temperature" 20.C and 1.0 atmosphere.
A) How many moles of gas
0 answers
680 views
The gravitational forces of the Earth and the Moon are attractive, so there must be a point on a line joining their centers
1 answer
1,748 views
Fill in the blank: The electrons follow a ________ path when they are deflected in a magnetic field due to the magnetic force.
0 answers
515 views
Two objects with masses 2.0 and 3.0 kg move toward each other, both with speeds V0 = 5.0 m/s. They collide head on and stick
1 answer
747 views
A sound wave travels at 343 m/s and a compression passes by every 12 ms. What is the wavelength of this sound?
1 answer
561 views
A car with a mass of 900 kg moves along a road at a 89 km/hour at equal speed. On the road is a curve with a radius of 250.
a)
0 answers
1,342 views
A pair of constant forces of magnitude F = 11.1 N is applied to opposite sides of the axle of a top, as shown in the figure. The
0 answers
638 views
integral of x/lnx
1 answer
345 views
A 0.0309-kilogram ball is stuffed into a spring gun and shot up into the air at some angle. The gun's spring has a force
0 answers
1,015 views
a 15-kg box is resting on a hill forming an angle with the horizontal. The coefficient of static friction for the box on the
1 answer
673 views
Model rockets are lightweight rockets powered by very small engines. A typical model rocket has a mass of 5g.Similarly, a
2 answers
547 views
A softball bat is rotating at 460 rotations per minute at contact with the ball. What is the angular velocity in radians?
1 answer
355 views
A uniform ladder weighing 197 N is leaning against a wall. The ladder slips when θ = 63.0°. Assuming that the coefficients of
1 answer
904 views
What is the current through a wire if 240 coulombs of
charge pass through the wire in 2.0 minutes?
4 answers
6,490 views
A boy intend to move an mkg crate across the floor by applying a constant force p newton on it.the coeficient of friction
1 answer
828 views
A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with
0 answers
556 views
A 6 kg grinding wheel of radius 0.2 m rotates at a constant rotational frequency of 4 rad/s when an object makes contact with
3 answers
669 views
A right triangle has a hypotenuse of length 13 meters and one side of length 5 meters. What is the length of the third side and
1 answer
1,201 views
A hiker, who weighs 1120 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs
1 answer
648 views
A basketball of mass 0.70 kg is dropped from rest from a height of 1.22 m. It rebounds to a height of 0.64 m. How much
0 answers
769 views
Exactly 11 kJ of energy was absorbed by 1 mol of Cl2(g) at 298 K. What i s thefinal temperature of the Cl2(g)? The heat capacity
0 answers
851 views
The blck mamba is one of the world's most poisonous snakes, and with a maximum speed of 18.0 km/h, it is also the fastest.
1 answer
1,163 views
Physics lenses. Please help, my math is wrong and I need second opinion.?
Consider three lenses with focal lengths of 25.9 cm,
3 answers
966 views
Hello, this is the last question that I can't seem to or be able to solve:
1. Jenny (75 kg) goes on a ski trip. She goes down a
0 answers
428 views
What does duracell manufacture say about the durability of their brand
1 answer
291 views
A scaffold of mass 50kg and length 5m is supported in a horizontal position by a vertical cable at each end. A window cleaner of
1 answer
657 views
A new type of spring is found where the spring force F is given by F=-kx + bx^2 where k=400 N/ m and b=100 N/m^2 and x is the
0 answers
635 views
A brick of mass 1.0 kg slides down an icy roof inclined at 30.0 degrees with respect to the horizontal. (a) If the brick starts
1 answer
2,529 views
A flywheel has a moment of inertia of 2.6 kg·m2. What is the average power needed to spin it up from rest to an angular
2 answers
429 views
A diesel engine takes in 0.5 moles of air at 20.0C and at atmospheric pressure. It then compresses it adiabatically to one
1 answer
500 views
(b)A coin is placed 20 cm from the axis of a rotating turntable of variable speed. This speed is gradually increased and the
1 answer
1,052 views
A Carnot engine has 200 g of helium as its working substance and operates between two reservoirs which are at temperatures of
2 answers
611 views
A square loop with resistance R=0.001 Ohms,mass 1.0 gram, and side length 1.0 m is falling into a region of uniform magnetic
0 answers
588 views
A charged particle is at the origin of coordinates. The
particle produces an electric field of 4 kN/C at the point with position
1 answer
1,216 views
A long, straight wire lies on a horizontal table and carries a current of 1.45 µA. In a vacuum, a proton moves parallel to the
1 answer
1,073 views
Consider an electron near the Earth's equator. In which direction does it tend to deflect if its velocity is directed in each of
3 answers
4,956 views
The inner conductor of a coaxial cable has a radius of 0.900 mm, and the outer conductor's inside radius is 5.00 mm. The space
1 answer
1,865 views
A 1.63 nF parallel-plate capacitor is charged to an initial potential difference ΔVi = 100 V and then isolated. The dielectric
2 answers
7,366 views
A 4.00 µF capacitor is connected to a 18.0 V battery. How much energy is stored in the capacitor?
This should be a relatively
2 answers
5,481 views
A 0.400 kg block of wood hangs from the ceiling by a string, and a 0.0700 kg wad of putty is thrown straight upward, striking
2 answers
1,306 views
A 0.409 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 19.5 N/m. The
2 answers
1,087 views
A 95 kg astronaut and a 1500 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite,
0 answers
788 views
A 0.135 kg ball is dropped from rest. If the magnitude of the ball's momentum is 0.730 kg·m/s just before it lands on the
3 answers
1,029 views
A 0.135 kg ball is dropped from rest. If the magnitude of the ball's momentum is 0.730 kg·m/s just before it lands on the
2 answers
657 views
In order to keep a leaking ship from sinking, it is necessary to pump 15.0 {\rm lb} of water each second from below deck up a
2 answers
806 views
A wire 28 cm long is parallel to a 0.36 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the
0 answers
532 views
A wire 28 cm long is parallel to a 0.36 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the
0 answers
488 views
a man stand on a 100 m cliff and throws a rock with speed of 40ms at 42degrees above horizontal.
what time before rock hits
1 answer
547 views
Determien the mass of the Sun using the known value for the period of the Earth and its distance from the Sun.
I do not remeber
2 answers
1,409 views
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