Which statement about an atom is correct?(1 point) The neutron has a negative charge and is found in the nucleus.

The neutron has no charge and is found outside of the nucleus.

The proton has no charge and is found in the nucleus.

The electron has a negative charge and is found outside of the nucleus.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat

Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*