The Earth exerts a gravitational force of 920 N on an object. What is the object's

mass in kg.

Johanna makes the table below to organize her notes about centripetal forces. Which type of force should she place in the cell marked X? tension gravity friction normal

Which reaction below represents a balanced, combustion chemical reaction? A) C2H5OH + 3O2 → 2CO2 + 3H2O B) C2H5OH + 3O2 → 2CO + 3H2O C) Li2CO3 → Li2O + CO2 D) 2Li + 2H2O → 2LiOH + H2

The sun continuously radiates energy into space in all directions. Some of the sun's energy is intercepted by the Earth. The average temperature of the surface of the Earth remains a little above 300 k.

When a 4.20-kg object is hung vertically on a certain light spring that obeys Hooke's law, the spring stretches 2.60 cm. (a) If the 4.20-kg object is removed, how far will the spring stretch if a 1.50-kg block is hung on it

3. If you are part of a center or network, you can use program-level data to A. change the way you record and maintain information. B. identify professional development needs. C. improve the management systems to support child learning. D.

Design an investigation to compare the durability of the three different brands

The surface area of the skin of a person who is 70 inches tall and weighs w pounds can be estimated by s (w) equals=342 w superscript 0.425342w0.425 , where s is in square inches.

The train speeds passed Holly at 70 km/h north ward. This spider crawls past lukes foot in the same direction at 30 m/h. What is the velocity of the spider relative to Holly?

What is the name of a particle with no charge in an atom?

What voltage produces a current of 500 amps with a resistance of 50 ohms?