Astudent measures the gravitational acceleration g to be 9.76±0.07 m/ improve his precision he spend a whole day repeating the measurement 400 times. he states the mean of the 400 measurements g - 9.746 m/s2 as his best estimate of g. in the lab g has an accepted value of g 9.80664 0.2 m/s arising from a precision measurement conducted by geo-physicists in the past

Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?

Which situation will produce the greatest change of momentum

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant