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OlgaM077 [116]
3 years ago
9

Which statements accurately describe mass? Check all that apply. Mass is a chemical property of an object. Mass is measured usin

g a balance. The mass of an object remains constant. Mass is the same as weight. Kilograms are units of mass.
Physics
2 answers:
Sati [7]3 years ago
8 0
-- Mass can be measured using a balance.
(It's not the only way.)

-- The mass of an object remains constant,
no matter where it is or what it weighs.

-- The "kilogram" is the international standard unit of mass.
A kilogram of mass weighs about 5.8 ounces on the moon,
about 13.3 ounces on Mars, about 2.2 pounds on Earth . . . . .
ivolga24 [154]3 years ago
5 0

Answer:

B, C, E

Explanation:

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KE= 1/2 * mass * Velocity^2

Explanation:

1/2 * 72.0kg* 79^2 m/s = 224676 J

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Martha must carry a 45 N package up three flights of stairs. Each flight of stairs has a height of 2.3m, and the actual distance
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310.5 J

Explanation:

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\Delta U = mg\Delta h

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3 0
3 years ago
In 1911, Ernest Rutherford and his assistants Geiger and Marsden conducted an experiment in which they scattered alpha particles
alexandr402 [8]

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1/2 mv² = k q₁q₂/d , d is closest distance

d = 2kq₁q₂ / mv²

= 2 x 9 x 10⁹ x 79e x 2e / 4mv²

= 1422 x2x (1.6 x 10⁻¹⁹)² x 10⁹ /4x 1.67 x 10⁻²⁷ x (1.5 x 10⁷)²

= 3640.32 x 10⁻²⁹ /2x 3.7575 x 10⁻¹³

= 484.4 x 10⁻¹⁶

=48.4  x 10⁻¹⁵ m

8 0
3 years ago
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