How much heat would be needed to completely evaporate 43.5 g of boiling water at a temperature of 100 °C? Express your answer in units of joules.

Unbalanced contact forces between several object would result in?

The following figures show four stages that occur during the formation of a one-solar-mass star. Rank these stages based on their rotation rate, from fastest to slowest.

runner is jogging at a steady 1 km/hr. When the runner is 0.88 km from the finish line a bird begins flying from the runner to the finish line at 3 km/hr (3 times as fast as the runner).

Which of the following statements best describes the importance of investigations in science

If an object traveling in one direction has s positive velocity, what kind of velocity would the same object traveling in the opposite direction have?

Galileo used his telescope to discover evidence for the Sun-centered model of the solar system. this evidence included all odds the following except a. venus going through phases b. Venus revolving around Sun, not Earth, c.

How much heat would be needed to completely evaporate 43.5 g of boiling water at a temperature of 100 °C? Express your answer in units of joules.

Metallic bonds are important to how paperclips are both made and used. Which statement best describes how metallic bond properties are important for making and using paperclips?

The greenhouse effect on which planet makes it the hottest planet in our solar system? A. Mars B. Mercury C. Venus D. Jupiter

A periodic wave with wavelength = 1 m has frequency f = 3 Hz. What is the wave's speed?