What metal is used to make hard magnets?

What is the order of magnitude of the speed of light

A car moving at a velocity of 20 m/s (at t = 0 sec) acquires a velocity of 40m/s. If the acceleration of the car is 4 m/s2, calculate (i) Time taken by the car to acquire the velocity of 40m/sec.

Consider the three following statements that concern two observers who are moving along the same line at different constant speeds with respect to an inertial frame. Which of them are true? A.

Isaac Newton's investigations of gravity explained which truth? A. Earth is not the center of the universe. B. Jupiter has more moons than Earth. C. Gravity acts on all objects in the universe. D. The sun is more massive than Earth.

Jamie is sliding down a slide what kind of motion

What object oriented feature can we use to have a single test program, with one set of method calls in which the user can decide which bag implementation (array - or link-based) needs testing?

What might motivate someone to study forensics

A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. If r = 17.

A mass spectrometer accelerates doubly ionized atoms of charge 2e over a potential difference V before they enter a uniform magnetic field B which is perpendicular to the direction of motion of the ions.

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.