How much heat is required to raise the temperature of 0.25 kg of water from 35 C to 80 C?

Does a white surface absorb every color of light?

An electromagnetic wave traveling in a vacuum has a frequency of 5 x 10 Hz, Calculate the wavelength of this wave. The speed of light in a vacuum is c. a) 6,000,000m b) om c) 0.06m d) 0.6m

A child standing on the edge of a freely spinning merry-go-round moves quickly to the center. Which one of the following statements is necessarily true concerning this event and why? a.

The force of attraction that holds together positive and negative ions is called ain)

Gaining neutrons makes an element? A more positive in electrical charge B more negative in electrical charge C have no change in electrical charge

If the moon did not have an atmosphere what would happen to it

Density is calculated by: dividing volume by mass dividing mass by volume multiplying mass and volume multiplying mass and gravity

The Burj Khalifa in Dubai is the tallest building in the world at about 828 m. A daredevil climbs to the top of the building and sees the the Boulevard Plaza 2 (141 m tall) about 300 m away.

Suppose the initial position of an object is zero, the starting velocity is 3 m/s and the final velocity was 10 m/s. The object moves with constant acceleration. Which part of a velocity bs.

Identify which type of scientist would use spectroscopy for each purpose. Identification of the composition of the sun and stars: Determination of chemical bonds: Prediction of the efficiency of possible laser materials: Identification of harmful