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3 years ago

ASAP!! please What is the answer? MCQ. Thank you

Physics

2 answers:

sdas [7]3 years ago

8 0

Answer:

Id say C

Explanation:

The hypotenuse for c is up and to the right so the unit vectors show that

siniylev [52]3 years ago

3 0

Answer:

Option c

Explanation:

The diagram which follow" head to tail rule" show equilibrium

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If I walk 15 minutes miles north and then 20 miles South:

Anna71 [15]

$\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the Kinematics.

1.) Distance travelled = 15+20 = 35 miles.

Ai the total distance covered is 35 miles.

2.) Displacement is the shortest distance from the initial point to the final point.

here it's ==> 20-15 = 5 miles

hence, displacement = 5 miles

6 0

2 years ago

A. What is the frequency of blue light that has a wavelength of 450 nm?

erastova [34]

Answer

a)Given,

Wavelength of blue light = 450 n m = 450 x 10⁻⁹ m

Speed of light = 3 x 10⁸ m/s

we know,

$c = \nu \lambda$

$\nu = \dfrac{c}{\lambda}$

$\nu = \dfrac{3\times 10^8}{450\times 10^{-9}}$

$\nu = 6.67 \times 10^{14}\ Hz$

b)Given,

Wavelength of red light = 650 n m = 650 x 10⁻⁹ m

Speed of light = 3 x 10⁸ m/s

we know,

$c = \nu \lambda$

$\nu = \dfrac{c}{\lambda}$

$\nu = \dfrac{3\times 10^8}{650\times 10^{-9}}$

$\nu = 4.62 \times 10^{14}\ Hz$

3 0

3 years ago

The tendon from the flexor hallucis longus muscle in the hindlimb of a turkey (Meleagris gallopavo) has a resilience of 0.93. If

Vitek1552 [10]

Answer:

8.37 Joules

Explanation:

The amount of energy that a substance, such as animal tissue or rubber can take and yet return to its original condition is known as resilience. When we stress such a substance and then let it restore to its previous state, we are referring to the substance to maintain its elastic area of the stress-strain curve.

From the given information:

the resilence is 0.93

The amount of work done during stretching of the tendon = 9.00 J

Thus,

the work done when relaxing = 0.93 × 9.00 J

= 8.37 Joules

8 0

3 years ago

An object starts from rest and accelerates uniformly in a straight line in the positive x direction. After 11 seconds, its speed

vladimir1956 [14]

Answer:

$v_{avg}=35m/s$

Explanation:

To calculate the average velocity we must know the distance traveled and do $v_{avg}=\frac{d}{t}$ . The distance traveled is $d=\frac{at^2}{2}$ , so we need to calculate the acceleration, which, since it's uniform, is $a=\frac{\Delta v}{\Delta t}=\frac{v_f}{t}$ . Putting all together:

$v_{avg}=\frac{d}{t}=\frac{at^2}{2t}=\frac{at}{2}=\frac{v_ft}{2t}=\frac{v_f}{2}=35m/s$

4 0

3 years ago

A measure of the pull of gravity on an object.

choli [55]

Answer:

weight.................

5 0

2 years ago