12/08/21

Physics vector problem
What is the direction equivalent to – [40° W of S]?a) [40° E of S]b) [40° W of N]c) [40° E of N]d) [50° S of W]e) [50° E of N]
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12/07/21

weight given kinetic friction
A block of wood is pulled by a horizontal string across a rough surface at a constant velocity with a force of 20 N. If the coefficient of kinetic friction between the surfaces is 0.2, what is the... more
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12/07/21

acceleration vector given mass
A ball of mass 2.0 kg is acted on by two forces , F1 = (+3.0N, 4.0N) and F2 = (-5.0N, +6.0N) . The acceleration vector, a, of the mass is (in m/s2)
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12/06/21

A ball is launched at 4.50 m/s at 60° above the horizontal. Find the maximum height and the time of flight of the ball.
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12/06/21

pls include solution for better understanding thankyou!
A force of 37N is required to stretch a spring a distance of 20 cm from its equilibrium position. What force is needed to compress the same spring 7 cm from its equilibrium position?
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12/06/21

pls include solution for better understanding thankyou!
An automobile to be transported by ship is raised 7.0 m above the dock. If its gravitational potential energy is 6.6 x 104 J, what is the automobile’s mass?
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12/02/21

River crossing physics problem

A swimmer has a swimming speed of 5.2 m/s in still water. When she heads directly across the river, she ends up travelling downstream at an angle of 30° (with respect to a line perpendicular to the... more
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12/01/21

What is the equation of a line that passes through the point (-6,11) with slope -5/12 using point slope form?
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12/01/21

I need help with my algebra work

What value of n in the equation nx+2=5y would give a line with slope 2
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11/28/21

Tough physics question
A motorcycle moving initially at 64 km/h [N], turns a corner and continues at 64 km/h [E]. The turn takes 8.0 s to complete. Find(a) the change in velocity (3 marks)(b) the average acceleration... more
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11/19/21

Write the equation of the parabola in vertex form. vertex (2,4), point (3,1) f(x)=
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11/15/21

On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3kg/m3 , length 83.9 cmcm and diameter 2.95 cmcm from a storage room to a machinist.
On a part-time job, you are asked to bring a cylindrical iron rod of density 7800 kg/m3kg/m3 , length 83.9 cmcm and diameter 2.95 cmcm from a storage room to a machinist. Calculate the weight of... more
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11/15/21

Calculate the acceleration due to gravity on Io at the point nearest Jupiter.
Jupiter’s moon Io has a radius of 1815 km, a mass of 4.7x10−5 that of Jupiter, and an orbital radius about Jupiter that is 5.95 times Jupiter’s own radius. Given that Jupiter’s mass is 318 times... more
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11/14/21

A compact disk, which has a diameter of 12.0 cm, speeds up uniformly from zero to 4.50 rev/s in 3.00 s .
a)What is the tangential acceleration of a point on the outer rim of the disk at the moment when its angular speed is 2.00?b)What is the tangential acceleration of a point on the outer rim of the... more
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11/14/21

The Ruby-throated Hummingbird (Archilochus colubris) can flap its wings with an angular speed of 356 rad/s.
What is the period of its flapping motion?
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11/11/21

Piston 1 in the figure below has a diameter of 0.721 cm;
Piston 1 in the figure below has a diameter of 0.721 cm;piston 2 has a diameter of 5.02 cm. In the absence of friction, determine the force required on piston 1 necessary to support an object, m,... more
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11/09/21

At what speed does the block start to move?
An 8.4g bullet travelling at 240ms-1 hits a block of wood of mass 1.2kg balanced on a wall. The bullet stops in the block. At what speed does the block start moving?
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04/25/21

physics hw help
The change in momentum (and impulse) are still 3000 N*s. Safety devices (like airbags, seatbelts and crumple zones) cause crashes to take more time to occur. Now the crash takes 1.5 seconds. How... more
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05/13/19

Car A has triple the mass and speed of Car B. What is the ratio of the kinetic energy of Car A to Car B?
A. 3B. 6C. 9D. 27
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05/13/19

The compliment of an angle is 40 degree more than four times itself. find supplementary angle
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05/12/19

The diagonal measure of a movie screen is 6m. The length of the screen is 2 m greater than the height. Find the dimensions of the screen.

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05/12/19

electron and proton movement through magnetic fields
I was wondering what causes protons and electrons to move in opposite directions when entering a constant magnetic field. I know that they both move in circular paths but I do not know how to tell... more
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04/28/19

What is principle of reversibility of light
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02/06/19

Geometry finding the sides of an angle
The perimeter of triangle uvw is 22.5 and wz bisects angle uwv uz = 2 and vz =2.5 find uw and vw
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03/15/15

Physics questions
a machine gun, mass of 35kg fires 50gram bullets, with a muzzle velocity of 750m/s at the rate of 300 rounds per minute. What is the average force exerted on the machine gun mount?
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