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3 years ago

X-component is 5, and y-component is 4. what is the angle of vector?

Physics

1 answer:

BlackZzzverrR [31]3 years ago

6 0

The tangent of the angle is (y component) / (x-component) .

The angle is arctan (4/5) = 38.66° (rounded)

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A 480N sphere 40.0cm in radius rolls without slipping 1200cm down a ramp that is inclined at 53 0 with the horizontal. What is t

IgorC [24]

As we know that sphere roll without slipping so there is no loss of energy in this case

so here we can say that total energy is conserved

Initial Kinetic energy + initial potential energy = final kinetic energy + final potential energy

$\frac{1}{2}mv_i^2 + mgh = \frac{1}{2}mv^2 + \frac{1}{2}I\omega^2+ mgh'$

as we know that ball start from rest

$v_i = 0$

height of the ball initially is given as

$h = Lsin\theta$

$h = 1200sin53 = 960 cm$

also we know that

$I = \frac{2}{5}mR^2$

also for pure rolling

$v = r\omega$

also we know that

$480 = m*9.8$

$m = 49 kg$

now plug in all data in above equation

$480*9.60 + 0 = \frac{1}{2}*49*(0.40*\omega)^2 + \frac{1}{2}*\frac{2}{5}*49*(0.40)^2\omega^2 + 0$

$4608 = 3.92\omega^2 + 1.568\omega^2$

$\omega^2 = 839.65$

$\omega = 29 rad/s$

So speed at the bottom of the inclined plane will be 29 rad/s

7 0

3 years ago

The application of solid-state physics that is the study of the arrangement of atoms in a solid is

balandron [24]

Answer:

crystallography.......

8 0

3 years ago

Which change in state requires that energy be added to the substance

KengaRu [80]

I believe it’s Deposition!

5 0

4 years ago

Read 2 more answers

The wavelength of a sound wave in this room is 1.13 m and the frequency is 301 Hz.

Yakvenalex [24]

Answer:

a. 340.13 m/s b. 680.26 m/s c. our wavelength doubles

Explanation:

a. speed of wave, v = fλ were f = frequency = 301 Hz and λ = wavelength = 1.13 m.

v = fλ = 301 Hz × 1.13 m = 340.13 m/s

b. If we double the frequency then f = 2 × 301 Hz = 602 Hz

v = fλ = 602 Hz × 1.13 m = 680.26 m/s

c. If the speed of the wave is still 340.13 m/s, if we cut the frequency in half, then frequency now equals f = 301 Hz/2 = 150.5 Hz.

Since v = fλ,

λ = v/f = 340.13 m/s ÷ 150.5 Hz = 2.26 m.

Since our initial wavelength λ₀ = 1.13 m,

λ/λ₀ = 2.26 m/1.13 m = 2.

So, λ = 2λ₀ our wavelength doubles

5 0

3 years ago

HELP PLS RIGHT ANSWER GETS BRAINLIEST!!!!

mr Goodwill [35]

Answer:

♧ Write the correct abbreviation for each metric unit.

♧ Try these conversions, using the ladder method.

2 g
104000 m
4.8 m
5600 g
0.8 cm
5000 mL
0.198 kg
0.075 L
0.5 m
560 cm
160 mm
2.5 km
65000 mg
63 mm
0.12 g

♧ Compare using <, >, or =.

16. <

17. >

18. =

19. =

20. <

21. >

8 0

3 years ago