Why does data need to be reliable

Which best explains the effect of reforestation on land? It allows crops to grow in wide steps along slopes. It turns land slowly into desert. It turns habitable land uninhabitable. It restores trees to areas where they once grew.

A uniform electric field with a magnitude of 125 000 N/C passes through a rectangle with sides of 2.50 m and 5.00 m. The angle between the electric field vector and the vector normal to the rectangular plane is 65.0°.

Which cells in the immune system identify pathogens and distinguish one pathogen from another? T cells phagocytes B cells red blood cells

A model rocket with a mass of 0.181 kg is launched into the air with an initial speed of 92 m/s. How much kinetic energy will the rocket have at a height of 164 m? Assume there is no wind resistance.

Why are elements considered finite

An ant sits on the back of a mouse. The mouse carries the ant across the floor for a distance of 10 m. Was there work done by the mouse? Explain.

How does the strong nuclear force compare with the electrostatic force in the nucleus of an atom? A. The strong nuclear force is stronger and is only attractive. B. The strong nuclear force is weaker and acts over longer distances. C.

A 1100 - kg car collides with a 1300 - kg car that was initially at rest at the origin of an x-y coordinate system. After the collision, the lighter car moves at 20.0 km/h in a direction of 30 o with respect to the positive x axis.

Which of the following is the best definition of an isotope? A. elements of the same kind with different numbers of neutrons B. elements of the same kind that have lost electrons C. elements of the same kind that have different electrical charges

A light plane must reach a speed of 33m/s for takeoff. how long a runway is needed if the the acceleration is 3.0m/s^2