8-нұсқа

• A

• B

• C

• D

• E

If a system is in static equilibrium, it must have the following 2 conditions:

• ∑τ=0

• Constant acceleration

• ∑F=0

• Positive forces only

What is observation?

• An act or instance of noticing, perceiving, or watching

• Observing something and ask questions about a natural phenomenon (scientific observation)

• Make prediction about logical consequences of the hypothesis

What is the importance of observation?

• To collect and record data

• To test prediction by controlled experiment, a natural experiment an observational study or a field experiment

• To create conclusion on the basis of data or information gathered in the experiment

On a parallel circuit, the voltage is 2KV and there are two resistors, with resistor 1 at 10Ω and resistor 2 at 2KΩ. What is the voltage at resistor 2?

• 2000V

• 20KV

• 200KV

• 2GV

"For all theories, T, we can generate other empirically equivalent theories such as T' or T"."

The theories belong to...

• John Earman

• Andre Kukla

• Larry Laudan

On a parallel circuit, the total voltage is 20KV and there are three resistors, with resistor 1 at 1KΩ, resistor 2 at 1KΩ and resistor 3 at 2KΩ. What is the current at resistor 1?

• 4A

• 20A

• 10A

• 100A

Complete the following sentence:

“Theory guides ____ as to when observations are credible”

• Instinct

• Effect

• Decision

On a parallel circuit, if the voltage is 100MV, the current is 10KA and the resistors are 10KΩ, 25KΩ and 50KΩ, what is the total resistance?

• 85KΩ

• 10KΩ

• less than 10KΩ

• greater than 85KΩ

On a series circuit, the total current is 10A, the total voltage is 200V and there are there are three resistors. Resistor 1 is 10Ω. What is the current of resistor 2 and resistor 3 combined?

• 5A

• 10A

• 40A

• 20A