The antiparticle for the electron is the
A. neutron
B. positron
C. proton
D. quark
B. positron
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When a wave reflects from a stationary boundary,
A. the frequency is unchanged. B. the frequency decreases. C. the frequency increases.
A firecracker explodes in midair and breaks up into many fragments. Which of the following statements are true regarding conditions immediately before and immediately after the explosion?
I. The total momentum of the fragments is equal to the original momentum of the firecracker. II. The total kinetic energy of the fragments is equal to the original kinetic energy of the firecracker. A) Statement I only B) Statement II only C) Both Statement I and Statement II D) Neither statement is true.
Tricia puts 5.30 g of dry ice (solid CO2) into a 4.00-L container and seals the top. The dry ice turns to gas at room temperature (20.0°C). Find the pressure increase in the 4.00-L container. (One mole of CO2 has a mass of 5.30 g, R = 0.082 1 L/atm/mol/K. Ignore the initial volume of the dry ice.)
a. 24.0 atm b. 6.01 atm c. 0.318 atm d. 11.2 atm e. 2.17 atm
What does partial melting have to do with silica content of a magma?
What will be an ideal response?