1d

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?

1d

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?

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

I need help with my algebra work

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

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

21d

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

21d

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

22d

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

22d

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?

25d

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

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?

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

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

04/28/19

What is principle of reversibility of light

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