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4 years ago

10

The diagrams show vectors. Which diagram represents the vector addition C = A

1 answer:

rewona [7]4 years ago

8 0

Answer:

C

Explanation:

good luck :3

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A student is observing an object of unknown mass that is oscillating horizontally at the end of an ideal spring. The student mea

Phoenix [80]

Answer:

Decrease in the object's maximum kinetic energy is caused by loss of energy by the system to its immediate surroundings.

Explanation:

None of the options are correct because for an object spring system, maximum kinetic energy is reduced when the system loses energy to the immediate surrounding.

Thus, decrease in the object's maximum kinetic energy is caused by loss of energy by the system to its immediate surroundings.

7 0

3 years ago

Faça uma redação sobre '' A luta das mulheres brasileiras pelos seus direitos ''

Kazeer [188]

DO YOU HAVE THE ENGLISH TRANSLATION?

5 0

3 years ago

A wheel moves in the xy plane in such a way that the location of its center is given by the equations xo = 12t3 and yo = R = 2,

Stella [2.4K]

Answer:

the velocity of the point P located on the horizontal diameter of the wheel at t = 1.4 s is $P = 104.04 \hat{i} -314.432 \hat{j}$

Explanation:

The free-body diagram below shows the interpretation of the question; from the diagram , the wheel that is rolling in a clockwise directio will have two velocities at point P;

the peripheral velocity that is directed downward $(-V_y)$ along the y-axis

the linear velocity $(V_x)$ that is directed along the x-axis

Now;

$V_x = \frac{d}{dt}(12t^3+2) = 36 t^2$

$V_x = 36(1.7)^2\\\\V_x = 104.04\ ft/s$

Also,

$-V_y = R* \omega$

where $\omega$ (angular velocity) = $\frac{d\theta}{dt} = \frac{d}{dt}(8t^4)$

$-V_y = 2*32t^3)\\\\\\-V_y = 2*32(1.7^3)\\\\-V_y = 314.432 \ ft/s$

∴ the velocity of the point P located on the horizontal diameter of the wheel at t = 1.4 s is $P = 104.04 \hat{i} -314.432 \hat{j}$

3 0

4 years ago

Which word contains a prefix that means again a irresistible b unfriendly c remix d overcooked

Murrr4er [49]

Answer:

C. remix

Explanation:

A is wrong because the prefix ir- means not

B is wrong because the prefix un means not

C is correct because re means again

D is wrong because over means too much

8 0

3 years ago

If a boulder is dropped straight down off the edge of a vertical cliff, how long does it take it to reach 90 Km/h? Give in secon

Semmy [17]

Answer:

2.551 m/s

Explanation:

Given:

Boulder is dropped from the cliff

thus,

Initial speed of the boulder, u = 0 m/s

Final speed to be obtained, v = 90 km/h = $90\times\frac{5}{18}$ =25 m/s

also, in the case of free fall the acceleration of the boulder will be equal to the acceleration due to the gravity i.e g = 9.8 m/s²

Now, from the Newton's equation of motion

v = u + at

where, a is the acceleration = g = 9.8 m/s²

t is the time

on substituting the respective values, we get

25 = 0 + 9.8 × t

or

t = $\frac{\textup{25}}{\textup{9.8}}$

or

t = 2.551 m/s

7 0

3 years ago