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4 years ago

9

The force you have to overcome to start an object moving is ____. A. Rolling friction c. Sliding friction b. Static friction d.

Air resistance Please select the best answer from the choices provided A B C D

1 answer:

finlep [7]4 years ago

5 0

Air resistance Please select the best

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The idea that large fibers in the sensory nerves can prevent impulses from reaching the brain and thus prevent the sensation of

allochka39001 [22]

Answer:

Gate control theory of pain

Explanation:

The gate control theory of pain sates that non-painful input closes the nerve gates to painful input, which prevents pain sensation from traveling to the central nervous system (brain).

Therefore, the idea that large fibers in the sensory nerves can prevent impulses from reaching the brain and thus prevent the sensation of pain is part of the gate control theory of pain.

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3 years ago

A train going 14m/s moves 250 m while accelerating to a stop. What is the train’s deceleration?

Elanso [62]

Answer:

-0.056 is the deceleration

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3 years ago

Which waves are used in medicine?

Reika [66]

Answer:

C

Explanation:

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3 years ago

A rod of 2.0-m length and a square (2.0 mm × 2.0 mm) cross section is made of a material with a resistivity of 6.0 × 10–8 Ω ⋅ m.

Andrews [41]

Answer:

= 8.33 Watt

Explanation:

$R = \frac{pl}{A}$

where,

p = resistivity

l = length

A = cross section area

Given that ,

p = resistivity = 6.0 × 10–8 Ω

l = 2m

A = cross section area = 2.0 mm × 2.0 mm = 4 x 10^-6 m^2

A = 2 x 2 mm^2 = 4 x 10^-6 m^2

p = 6 x 10^-8 ohm metre,

V = 0.5 V

Let R be the resistance of the rod

$R = p\frac{l}{A} \\\\R = 6.0 \times 10^-^8 (\frac{2}{4 \times 10^-^6} )\\\\R = 3 \times 10^-^2$

R = 3 × 10⁻²Ω

Heat generated = V^2 / R

= (0.5)^2 / (3 x 10^-2)

= 8.33 Watt

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3 years ago

In a laboratory, you determine that the density of a certain solid is 5.23×10−6kg/mm3. Convert this density into kilograms per c

madam [21]

Answer:

1 mm^3 = 1.0 x 10^-9 m³

Hence;

5.23 x 10^-6 kg/mm^-3 = (5.23 x 10^-6 kg)/ 1x10^-9 m³

= 5230 kg/m³

4 0

3 years ago

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