Isaac Newton guessed that gravity works by an inverse square relation because he had already discovered that light behaves this way

Indicate whether the statement is true or false


True

Physics & Space Science

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When an electron is removed from a neutral atom, it becomes

A) a positive ion. B) a negative ion. C) heavier. D) a bipolar atom. E) more massive.

Physics & Space Science

If 150 kcal of heat raises the temperature of 2.0 kg of a material by 400°F, what is the specific heat capacity of the material?

A) 1.35 kcal/kg ? °C B) 0.75 kcal/kg ? °C C) 0.34 kcal/kg ? °C D) 0.19 kcal/kg ? °C

Physics & Space Science

The ______________ for compounds are written by putting the composing elements' symbols adjacent to each other, with subscripts indicating the number of atoms of each

a. equations b. molecules c. isotopes d. formulas

Physics & Space Science

A charged particle (mass = 4.0 ?g, charge = 5.0 ?C) moves in a region where the only force on it is magnetic. What is the magnitude of the acceleration of the particle at a point where the speed of the particle is 5.0 km/s, the magnitude of the magnetic field is 8.0 mT, and the angle between the direction of the magnetic field and the velocity of the particle is 60°?

a. 39 km/s2 b. 43 km/s2 c. 48 km/s2 d. 52 km/s2 e. 25 km/s2

Physics & Space Science