Physics Answers

• What nuclide is formed when 226/88 Ra undergoes alpha decay?

• 64/29 Cu undergoes beta-minus decay. What daughter nuclide is formed?

1. Give the number of protons , neutrons, and electrons in 238/92 U

2. What is the radius of the nucleus of  24/14 Si? What is its volume?

The magnitude of the self-induced electromotive force in solenoid is 0.03 V when the current is increasing at a rate of 0.064 A/s.

           a.) Find the inductance of the solenoid.

           b.) If the solenoid has 450 turns . What is the magnetic flux through each turn when the current is 0.73 A.

A person plugged in a 1350 W hair dryer and a 2600 W electric heater in the same 130 V outlet protected by a 8.5 A circuit breaker. Will the breaker trip?

A proton moving horizontally at 4.5 x 10 ⁴ m/s enters a uniform magnetic field of 0.075 T directed upward 45⁰ with the horizontal. Find the magnitude of the magnetic force acting on the proton.

On a surface of a planet, 60 J of work is done against gravity to raise a mass of 2.0kg through a height of 10m. Determine the gravitational field strength g on this planet

If the refractive index of the two media are 1.2 and 1.5. What is the distance between the object and the image given the radius of curvature of 2cm

The change in direction between the incident ray and the emergent ray is know as

A beam of particles strikes a wall containing 2x10^29 nuclei per m^3. Each nucleus behaves like a sphere of radius 3x10^−15 m. Find the thickness of a wall that exactly half the particles will penetrate without scattering. What thickness would be needed to stop all but one particle in 10^6 ?

An unmanned vehicle follows a curved path, beginning at O and ending at A, of length 18 m. At O the speed of the vehicle is 12 m/s and it has slowed to 6 m/s at A. The tangential deceleration of the vehicle is proportional to the distance from O. a) Write an equation for tangential acceleration. b) Find the constant of proportionality in your equation