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OlgaM077 [116]
1 year ago
14

A missile is moving 1810 m/s ata 20.0° angle. It needs to hit atarget 19,500 m away in a 32.0°direction in 9.20 s. What is thema

gnitude of the accelerationthat the engine must produce?

Physics
1 answer:
garri49 [273]1 year ago
3 0

First let's calculate the vertical and horizontal components of the distance:

\begin{gathered} dh=19500\cdot\cos (32\degree) \\ dh=16536.94 \\  \\ dy=19500\cdot\sin (32\degree) \\ dy=10333.43 \end{gathered}

Then, since we have the time required, let's find the speed in each direction:

\begin{gathered} vh=\frac{dh}{t} \\ vh=\frac{16536.94}{9.2} \\ vh=1797.49 \\  \\ vy=\frac{dy}{t} \\ vy=\frac{10333.43}{9.2} \\ vy=1123.2 \end{gathered}

Now, let's decompose the given speed in its components:

\begin{gathered} Vh=1810\cdot\cos (20\degree) \\ Vh=1700.84 \\  \\ Vy=1810\cdot\sin (20\degree) \\ Vy=619.06 \end{gathered}

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An object has a kinetic energy of 225 j and a momentum of magnitude 28.3 kg · m/s. (a) find the speed of the object. m/s (b) fin
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3 years ago
Who invented the wedge simple machine and why?
Lelu [443]

Answer:

Gene Sarazen began to win tournaments in 1935 with a new club he had invented that was specialized for sand play. He is hailed as the inventor of the sand wedge.

Explanation:

A wedge is a triangular shaped tool, and is a portable inclined plane, and one of the six classical simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width.[1][2] Although a short wedge with a wide angle may do a job faster, it requires more force than a long wedge with a narrow angle.

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3 0
3 years ago
How do two objects at different temperatures attain thermal equilibrium?
Lady bird [3.3K]

Answer:

C.As the two objects touch, thermal energy flows as heat from the warmer block to the colder block until particles in both blocks move at the same rate and reach the same temperature.

Explanation:

Heat is the transfer of thermal energy from an object at higher temperature to an object at colder temperature.

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3 0
3 years ago
Equations to use: v= λ ∙ f v=d/t
Margarita [4]

b. 460.8 m/s

Explanation:

The relationship between the speed of the wave along the string, the length of the string and the frequency of the note is

f=\frac{v}{2L}

where v is the speed of the wave, L is the length of the string and f is the frequency. Re-arranging the equation and substituting the data of the problem (L=0.90 m and f=256 Hz), we can find v:

v=2Lf=2(0.90 m)(256 Hz)=460.8 m/s

c. 18,000 m

Explanation:

The relationship between speed of the wave, distance travelled and time taken is

v=\frac{d}{t}

where

v = 6,000 m/s is the speed of the wave

d = ? is the distance travelled

t = 3 s is the time taken

Re-arranging the formula and substituting the numbers into it, we find:

d=vt=(6,000 m/s)(3 s)=18,000 m

3 0
3 years ago
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