How many neutrons does element X have if it's atomic number is 23 and its mass number is 70

Which statement describes the velocity of a mass oscillating on a spring? The velocity is constant throughout the motion. The velocity remains the same throughout the motion. The velocity is zero at the maximum displacement.

Describe three societal needs that drive scientific endeavor and give an example of a scientific endeavor associated with each.

Four heavy elements (A, B, C, and D) will fission when bombarded by neutrons. In addition to fissioning into two smaller elements, A also gives off a beta particle, B gives off gamma rays, C gives off neutrons, and D gives off alpha particles.

a young's double plit apparatus is set up. a screen is positioned 1.6 m from the double slits and the spacing between the two slits is 0.04 mm. the distance between alternative bright fringes is 1.42 cm. find the light resourse wavelenght

A boulder with a mass of 2,500 kg rests on a ledge 200m above the ground. What is the boulder's GPE

What is the difference between contact forces and forces that act through a force field?

Suppose two parallel-plate capacitors have the same charge Q. but the area of capacitor 1 is A and the area of capacitor 2 is 2A. 1.

You want to launch a stone using the elastic band of a slingshot. The force that the elastic band applies to an object is given by F = - α∆s4, where α = 45 N m4 and ∆s is the displacement of the elastic band from its equilibrium position.

Which of the following statements regarding emails is true

If your fitness evaluation score is not satisfactory, set a new goal for the assessment and train for that goal. true or false