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3 years ago

Answer the question with step.

Physics

1 answer:

Maru [420]3 years ago

7 0

Answer:

f1/f2 =W1/W2 = 1/3

.0 f2 = 3f1

As ,

1/F= 1/f1 +1/f2

...1/40 = 1/f1 - 1/3f1

f1=> 80/3 cm

... f2 = 2f1 = 3 x 80/3 = 80 cm

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Will give 20 point plus brainlist

zloy xaker [14]

Answer:

O 50 squirrels

Explanation:

1 acre => 5 squirrels

10 acres => 50 squirrels

7 0

2 years ago

The kinetic energy of a rotating body is generally written as K=12Iω2, where I is the moment of inertia (also known as rotationa

agasfer [191]

Answer

given,

expression of Kinetic energy of rotating body

$K = \dfrac{1}{2}I\omega^2$

ω = 34.0 rad/s

Assuming mass of the particle equal to 13 Kg

and perpendicular distance from the particle to the axis is r = 1.25 m

now,

moment of inertia of particle = ?

from the given expression

$I= \dfrac{2K}{\omega^2}$ ..............(1)

we know

$K = \dfrac{1}{2}mv^2$

v = r ω

$K = \dfrac{1}{2}mr^2\omega^2$

putting value in equation (1)

$I= \dfrac{2\dfrac{1}{2}mr^2\omega^2}{\omega^2}$

$I =mr^2$

$I =13 \times 1.25^2$

I = 20.3125 kg.m²

4 0

3 years ago

Brandon buys a new seadoo he goes 12 km north from the beach he jumps wakes for 6 km to the east the chases a boat 10 km north w

d1i1m1o1n [39]

Answer:

Distance covered 28 km

displacement is 22.8 km North-East

Explanation:

Distance shows how far apart objects or points are from each other. The distance he covered is the sum of all the distance travelled. Therefore:

Distance covered = 12 km + 6 km + 10 km = 28 km

Displacement is a vector quantity (has direction). It is the overall change in position.

The total distance traveled north = 12 km + 10 km = 22 km

The distance traveled east = 6 km

The displacement (d) is:

d² = 22² + 6² = 484 + 36

d² = 520

d = √520 = 22.8 km

Therefore the displacement is 22.8 km North-East

3 0

3 years ago

During a tug-of-war, team A pulls on team B by applying a force of 1550 N to the rope between them. The rope remains parallel to

yawa3891 [41]

Answer:

3565 J

Explanation:

F = Force applied = 1550 N

s = Displacement caused by the applied force = 2.3 m

$\theta$ = Angle at which the force is applied = 0°

When we multiply force, displacement and the angle at which the force is applied we get work

Work done is given by

$W=Fscos\theta\\\Rightarrow W=1550\times 2.3\times cos 0\\\Rightarrow W=3565\ J$

The work done by team A is 3565 J

6 0

4 years ago

Which stable element is used to determine the age of volcanic rock?

crimeas [40]

Answer:

The answer is A

Explanation:

Argon is the stable element that is used to determine the age of volcanic rock as it is found inside of it.

I dont know if the top is correct but the answer is because i just took the test.

5 0

3 years ago

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Answer the question with step.​

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