PHYSICAL SCIENCE SUBJECT GRADE 11

Question 211 pts

Which has the LEAST momentum?

Group of answer choices

a 80 kg ball moving at 25m/s

a 12 kg ball moving at 1.25 m/s

a 750 g ball moving at 15 m/s

a 2 kg ball moving at 8 m/s

Flag question: Question 22Question 221 pts

What is the name given by Planck to the smallest quantity of energy that can be emitted in the form of EM radiation?

Group of answer choices

quantum

wave

Kinetic energy

Planck's constant

Flag question: Question 23Question 231 pts

What is the reaction force when Alex pulls the end of a spring attached to a wall?

Group of answer choices

the wall pulling oppositely on the spring

the spring pulling on Alex

to reaction was observed

both the wall and the spring pulling on Alex

Flag question: Question 24Question 241 pts

Which of the following is NOT TRUE about vector quantities?

Group of answer choices

They are always denoted with an arrowhead () on top of their symbols.

They are described with numerical values and direction.

In some cases, they are italicized.

Some examples are velocity, acceleration, force, weight

Flag question: Question 25Question 251 pts

Which of the following models refers to a sun-centered universe?

Group of answer choices

Heliocentric

Geocentric

Aristotelian

Tychonic

Flag question: Question 26Question 261 pts

How much is the energy of a single photon of the blue light with a frequency of 7.5 x 10¹⁴ Hz?

Group of answer choices

4.97 x 10¹⁵ J

1.13 x 10⁴⁸ J

8.84 x 10^-49 J

4.97 x 10^-19 J

Flag question: Question 27Question 271 pts

Which of the following quantities describes how fast an object is moving in a particular direction?

Group of answer choices

displacement

velocity

speed

acceleration

Flag question: Question 28Question 281 pts

What happens to energy and frequency if there is shorter wavelengths?

Group of answer choices

Lower frequency and greater energy

Lower frequency and lower energy

Higher frequency and greater energy

Higher frequency and lower energy

Flag question: Question 29Question 291 pts

Who was the proponent of the discovery of Universal Gravitation?

Group of answer choices

Isaac Newton

Christian Huygens

Robert Hook

Albert Einstein

Flag question: Question 30Question 301 pts

Following the Cartesian coordinate system, what does it mean if there is a positive sign?

Group of answer choices

north; east; up; to the right

north; west; up; to the right

south; west; down; to the left

south; east; down; to the left

Flag question: Question 31Question 311 pts

Which of the following is an example of distance?

Group of answer choices

30 m, to the right

34.67 m

2.03 m/s

- 3.55 m/s

Flag question: Question 32Question 321 pts

What will happen to the acceleration of a cart if you double the mass of it while it is undergoing a constant unbalanced force?

Group of answer choices

one-fourth as much

increased fourfold.

one-half as much.

doubled

Flag question: Question 33Question 331 pts

An unfortunate bug splatters on the windshield of a truck. Which of the following statements is TRUE in the given scenario?

Group of answer choices

The truck exerts more force than the bug.

The bug exerts more force than the truck.

Both the bug and the truck exert the same amount of force.

It is impossible to determine which exerts more force.

Flag question: Question 34Question 341 pts

How much energy does a green light possess if it has a wavelength of 4.95 x 10^-7 m?

Group of answer choices

9.14 x 10⁴⁷ J

4.02 x 10¹⁵ J

9.85 x 10^-32 J

4.02 x 10^-19 J

Flag question: Question 35Question 351 pts

What is the magnitude of the gravitational force between two 0.3 kg textbooks on a bookshelf that are 15 cm apart?

Group of answer choices

2.59 x 10^-8 N

2.52 x 10^-8 N

2.48 x 10^-10N

2.67 x 10^-10N

Flag question: Question 36Question 361 pts

Which of the following situations has zero net force on the body?

Group of answer choices

A car driving straight up a hill with a 3 slope at a constant 90 km/h.

A box with slick, frictionless surfaces in the back of a truck as the truck accelerates forward on a level road at 5 m/s²

An airplane flying due north at a steady 120 m/s and at a constant altitude.

A hawk circling at a constant 20 km/h at a constant height of 15 m above an open fieldA box with slick, frictionless surfaces in the back of a truck as the truck accelerates forward on a level road at 5 m/s2

Flag question: Question 37Question 371 pts

Which statement is TRUEabout electromagnetic radiation?

Group of answer choices

Gamma rays have the longest wavelength and highest frequency.

Visible light ranges from 200 nm - 700 nm

Radio waves have the longest wavelength and lowest frequency

X rays are low frequency radiation

Flag question: Question 38Question 381 pts

Which of the following is an example of displacement?

Group of answer choices

- 3.55 m/s

34.67 m

30 m, to the right

2.03 m/s

Flag question: Question 39Question 391 pts

Who among the following Greek Philosophers thought that the heavier the object is, the faster it would fall towards the ground?

Group of answer choices

Plato

Newton

Galileo

Aristotle

Flag question: Question 40Question 401 pts

Which of the following is NOT TRUE about mass and inertia?

Group of answer choices

The greater the mass, the greater the inertia.

Mass is a measurement of an object's inertia.

A 50-kg man has more inertia than an 80-kg elephant.

The relationship between mass and inertia is directly proportional.