The chemical symbol for the element calcium is Ca. What would be the symbol representing calcium atoms that have lost two electrons?

Which of these refers to the set of characteristics that underlie a relatively stable pattern of behavior in response to ideas, objects or people in the environment Options Dissonance perception Personality Halo effect Attitude

If a hockey player starts from rest and accelerates at a rate of 2.1 m/s2, how long does it take him to skate 30 m?

A parallel-plate capacitor in air has a plate separation of 1.25 cm and a plate area of 25.0 cm2. The plates are charged to a potential difference of 244 V and disconnected from the source. The capacitor is then immersed in distilled water.

A child pushes a 75 N toy car across the floor. What is the mass of the car?

A spacecraft is separated into two parts by detonating the explosive bolts that hold them together. the masses of the parts are 1300 kg and 1700 kg. the magnitude of the impulse on each part from the bolts is 210 n · s.

Which of these rocks are formed by volcanic activity? select the two correct answers. a. marble b. basalt c. limestone d. granite e. sandstone

Which source is most likely an authority on the subject? Dr. Vale, a pediatrician, discusses electrical circuitry on her home-improvement website. Jonah, an amateur cook, teaches his son how to make the best grilled cheese sandwiches.

What methods can be used to break down substances into elements

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?