What did Bohr hypothesize about the atom?

That the atom is a positive, solid sphere with electrons in it.

That the atom is one large solid particle.

That the atom is a nucleus only.

That the atom is a nucleus with electrons orbiting around it.

Which metallic properties are caused by atoms rolling over each other in metallic bonds? a. malleability and ductility b. shininess and ductility c. conductivity, malleability, and shininess d. ductility, conductivity, and malleability

The length of each of the bonds between the atoms of a molecule of nitrogen (n2) is 0.0465 nm. the mass of a nitrogen atom is 2.32 * 10-11 pg.

The two forces acting on a falling object are gravity and

Siska hit a golf ball into the air with an initial velocity of 56 feet per second. The height h in feet of the ball above the ground can be modeled by h=-16t^{2}+56t, where t is the time in seconds after Sisika hit the ball.

A car is moving 14.4 m/s when it hits the brakes. It slows for 78.8 m, which takes 9.92 s. It then accelerates at 1.83 m/s^2 for 4.50 s. What is its final velocity? 2-part motion 1-D kinematics

A rotating water pump works by taking water in at one side of a rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120 m starts from rest and accelerates at 30.

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates