How many valence electrons are there in group viia elements

Is energy matter? Is gravity matter? Why or why not

A carpenter is working on a house two blocks away. you notice a slight delay between seeing the carpenter's hammer hit the nail and hearing the blow. at what time does the event "hammer hits nail" occur?

When riding your skateboard you crash into a curb, the skateboard stops, and you continue moving forward. Which law of motion is being described in this scenario? A. Law of Universal Gravitation B. Newton's Second Law of Motion C.

An EM wave has a wavelength A 500 nm and a peak electric field Eo 100 i. The wave propagates along the z axis.

Which of the following should a scalar measurement have? a. magnitude b. description c. direction d. unit

What produces an electromagnetic wave? A) An oscillating or accelerating electric charge B) An electric charge moving at constant velocity C) A static electric charge D) A magnetic monopole moving at constant velocity

A physics book has a height of 25.8 cm, a width of 20.2 cm, and a thickness of 2.90 cm. (a) What is the density of the physics book if it weighs 20 N? kg/m³ (b) Find the pressure that the physics book exerts on a desktop when the book lies face up.

A 24 volt battery is connected to a 3Ω resistor and a 5Ω resistor in series. What is the current in the circuit?

Two technicians are discussing a problem where the brake pedal travels too far before the vehicle starts to slow. Technician A says that the brakes may be out of adjustment.

What are three types of muscle fibers? A.) smooth, intermediate-twitch, cardiac B.) slow twitch, intermediate twitch, fast twitch C.) smooth, cardiac, skeletal D.) slow twitch, fast twitch, involuntary