Can someone please help me with this.. Q. A sphere of mass 10.0 was charged negatively. It was held, floating 2.5cm above an object carrying a charge of -1.4 ×10^-7C. what charge would be carried by the sphere.

Identify two factors that determine the rate of stream erosion

Awheel rotates without friction about a stationary horizontal axis at the center of the wheel. a constant tangential force equal to 82.0 n is applied to the rim of the wheel. the wheel has radius 0.150 m . starting from rest, the wheel has an angular speed of 12.8 rev/s after 3.88 s. what is the moment of inertia of the wheel?

The difference between two numbers is 15. when twice the smaller number is subtracted from three times the larger number, the difference is 58.what is the larger number?