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A solid sphere of radius 0.05 m and mass 1.00 kg rolls on a horizontal surface with a vlocity of 15 ms-1 and then rolls up an incline at an angle of 20o.If friction forces equal zero, to what height above the horizontal surface will the sphere rise before it comes to rest? (the moment of...

torque = force * distance

angular velocity = tangential speed/ radius moment of inertia = mass * (radius)squared work = force * distance

i am originally from victoria but im staying for a while in sydney currently in yr 12 and im doin distant education

How much work is done to increase the angular velocity of a wheel from rest to a final value of 20 radians per second.The wheel has a moment of inertia of 0.30 kg m2 .What torque is required to reach this angular velocity in a time of 5.0 s?

A solid sphere of radius 0.05 m and mass 1.00 kg rolls on a horizontal surface with a velocity of 15 ms-1 and then rolls up an incline at an angle of 20o.If friction forces can be neglected , to what height above the horizontal surface will the sphere rise before it comes to rest? (the moment...

A ball of mass 0.25 kg moving horizontally with a velocity of 13 ms-1 is hit with a bat. The final velocity of the ball is 19 ms-1 in the opposite direction. If the bat is in contact with the ball for 0.02 s, find the average force of the bat on the ball.

A car goes round a circular track of radius 30.0 m which is banked at an angle of 15o to the horizontal to make it safer when there is ice on the road. What is the maximum safe speed of the car if there is no friction between the tyres and the road?

A plastic block slides from rest a distance of 0.70 m down a plank. If there is no friction between the block and the plank which is at an angle of 20o to the horizontal, calculate the velocity of the block when it has reached the bottom of the plank.

in the conversion of h2o2 to 02 how many electrons are lost or gained by the two oxygen atoms

therefore is 2H202 THE OXIDISING AGENT?

2H202 ----> 2H20 + 02 which species is the oxidising agent/ reducing agent and why ? please help thanx

a sample of impure Ba(NO3)2 is analysed by dissolving 0.222g of the mixture completely in water. excess Na2SO4 solution is added and a precipitate of BaSO4 is formed. the mass of the precipitate, after filtering and drying, is 0.182g . calculate the percent of purity of the original Ba(NO3)2...

a sample of CO gas was collected over water at 20 degrees and a total pressure of 1.045 atm. if the volume of water collected was 50.0 ml, what was the mass of CO collected ? (at 20 degrees the vapour pressure of water is 17.5 torr. )

how do i caluclate the coefficient of friction force: i noe F (friction) = coefficent of friction x F (normal) A block of mass 3.00kg is being pushed across a rough surface with a velocity of 5.0 ms-1 When the pushing force is removed the block comes to rest in a distance of 3.0 m...

A and B are two vectors. A= (5i+3j) and B= (3i-2j). ( i) Calculate the magnitude and direction of the vectors A and B. (ii) Calculate the magnitude and direction of the sum A +B. (iii) Find the scalar product A.B for these two vectors. (iv) Find the angle between vector A and B.

Through how many radians does a point on the surface of the earth move in 6 hours? What is the speed of a point on the earth's equater? (radius of the earth is 6370km.)

A flywheel rotates at 480 rpm. Calculate a) the angular speed at any point on the wheel and b) the tangential speed 30.0cm from the centre

A block of mass 3.00kg is being pushed across a rough surface with a velocity of 5.0 ms-1 When the pushing force is removed the block comes to rest in a distance of 3.0 m. Calculate the coefficient of friction between the block and the rough surface.

veronica angrily throws her engagement ring staight up from the roof of a building, 12m above the ground, with an initial speed of 6.00m/s neglecting air resistance, for the motion from her hand to the ground, what are the magnitude and direction of (a) the average velocity of the ring...