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3 years ago

An idea is being proposed. The steps that lead to the idea are listed below.

Physics

2 answers:

gavmur [86]3 years ago

8 0

there were different outcomes each time.

Feliz [49]3 years ago

7 0

Answer: There were different outcomes each time.

Explanation:

An idea is said to be scientific when it is supported by evidences obtain by performing many experimental trials. The outcomes of the experiment are conclsuive in determining result and conclusion and makes an idea scientific.

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A 0.600 kg toy car is powered by one 9V battery (9.00 V) connected directly to a small DC motor. The car has an effective energy

valina [46]

Answer:

The average current I supplied to the cars motor is 0.225 Amperes.

Explanation:

The mass of the toy car is given as, m = 0.6 kg

The toy car operates at a steady speed of, v = 3.43 m/s.

It achieves the steady speed after a time, t = 5.69 seconds.

The total kinetic energy of the car is given by,

E = $\frac{1}{2} m v^2$

= 0.5 × 0.6 × $(3.43)^2$

= 3.53 Joules

Since the efficiency of the motor is 30.6% = 0.306

The electrical energy equivalent is supplied to motor = $\frac{3.53}{0.306} = 11.54 Joules$ .

The electrical energy is given by P × t = I × V × t = 11.54 Joules

P is the electric power where P = I × V where V is the voltage of the cell and is the average current, I.

Therefore we can write I × 9 × 5.69 = 11.54 Joules.

So the average current I = $\frac{11.54}{9 \times 5.69 }$ = 0.225 Amperes.

3 0

3 years ago

If a football player has more mass they will also have more ______ ? Fill in the blank

serg [7]

If a football player has more mass, they will also have more momentum. This is because mass is directly proportional to momentum.

3 0

3 years ago

As shown above an adhesive has been applied to contacting faces of two blocks so that the blocks interact with an adhesive force

rusak2 [61]

The magnitude of the adhesive force allows the top block to remain

attached to the bottom when the blocks and the wire are balanced.

The option that must be true is; $\mathbf{W_{bottom} = F_{adhesion}}$

Reason:

The tension exerted by the wire attached to the top block = T

Magnitude of the adhesive = $F_{adhesion}$

Weight of the top block = $W_{top}$

Weight of the bottom block = $W_{bottom}$

Given that with the exertion of the tension, the two blocks remain at rest, we have;

T = $W_{top}$ + $W_{bottom}$

The adhesive causes the bottom block to remain attached to the top block, we have;

Therefore, the magnitude of the adhesive force adds the bottom weight, to the top, weight, which gives;

The magnitude of the adhesive force = The weight of the bottom block

Therefore;

$W_{bottom}$ = $F_{adhesion}$

Learn more here:

brainly.com/question/18907970

8 0

3 years ago

Which rf characteristic best determines the range of a 2.4 ghz ism signal?

Rainbow [258]

The radio frequency characteristic that best determines the range of a 2.4 GHz ism signal is the wavelength.

This frequency can be used in WiFi and can reach up to 46 meters when indoors and about 92 meters when outdoors.

3 0

3 years ago

A 50.0 kg person is walking horizontally with constant acceleration of 0.25 m/s² inside an elevator. The elevator is also accele

Alexxandr [17]

Answer:

The acceleration is in 2 D as in between east and south.

Explanation:

mass, m = 50 kg

acceleration, a = 0.25 m/s^2 horizontal

acceleration of elevator, a' = 1 m/s^2 downwards

When a person on the ground the resultant acceleration of the person with respect to the ground is between east and south direction so the path os parabolic in nature. It graph is shown below:

6 0

3 years ago