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2 years ago

CAN SOMEONE PLS HELP ME!!!

Physics

2 answers:

scZoUnD [109]2 years ago

4 0

Answer:

Explanation:

the question answered itself.

Ede4ka [16]2 years ago

3 0

Option C -average speed is used, which is total distance divided by total time.

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) is it possible for one component of a vector to be zero, while the vector itself is not zero?

Natalka [10]

The least number of component of a vector quantity is two. These are the x-component and the y-component.

The resultant vector, or vector as we refer to it in this item, can be calculated through the equation,
RV = sqrt ((Vx)² + (Vy)²)

From the equation, it can be noted that if we let Vx equal to zero,
RV = Vy

Similarly, if we let Vy be equal to zero then,
RV = Vx

Thus, it is still possible for the vector to become nonzero even if one of its components is zero.

8 0

4 years ago

A uniform stick has a mass of 4.42 kg and a length of 1.23 m. It is initially lying flat at rest on a frictionless horizontal su

nataly862011 [7]

10.7 rad/s is the final angular velocity of the stick.

Given:

Mass of the stick = 4.42 kg

Length of the stick = 1.23m

Force of impulse (I) = 12.8 N s

The linear velocity of the stick, $v=\frac{I}{m}$

$v=\frac{12.8 N.s (\frac{1 kg m/s^2}{1 N}) }{4.42 kg}$

$v$ $= 2.89 m/s$

Therefore, the final linear velocity of the stick is 2.89 m/s

∴ $w=\frac{12 Ir}{ml^{2} }$

$w=\frac{12 ( 12.8 N.s ) ( 46.4 cm)}{(4.42 kg) (1.23 m)^2}$

$w= \frac{12 (12.8 N.s) (46.4 cm) (\frac{10^-^2 m}{1 cm} )}{(4.42 kg) (1.23m)2}$

$w=10.7 rad/s$

Therefore, 10.7 rad/s is the final angular velocity of the stick.

Learn more about linear velocity here:

brainly.com/question/15154527

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5 0

2 years ago

What fraction of the space within the atom is occupied by the nucleus?

ValentinkaMS [17]

Answer:

Approximately 6.8 x 10⁻¹⁵

Explanation:

To be able to get this fraction, there are some things we need to know.

1. The radius of nucleus = 1.0 x 10⁻¹³ cm

2. The radius of hydrogen atom = 52.9 pm

3. Volume of sphere = V1/V2 = (R1/R2)^3

4. 1 picometer (pm) = 10^-10 cm

CHECK ATTACHMENT FOR Step by step solution to the answer

3 0

3 years ago

PLEASE ANSWER ASAP

Mekhanik [1.2K]

Answer:

yes h h jj h v gu i kj

Explanation:

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8 0

3 years ago

Who was the first president of America

ivolga24 [154]

Answer:George Washington

Explanation:On April 30, 1789, George Washington, standing on the balcony of Federal Hall on Wall Street in New York, took his oath of office as the first President of the United States.

5 0

3 years ago

Read 2 more answers