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3 years ago

Physics Help Please!!!

Physics

2 answers:

kolezko [41]3 years ago

8 0

$v = 13 \frac{m}{s}, \theta = 54^\circ \\ \\ v_{xi} = v*cos \theta \\ v_{yi} = v*sin\theta \\ \\ a_x = 0, a_Y = -10 \frac{m}{s^2} \\ \\ v_{yf} = v_{yi} + a_yt = -v_{yi} \\ t = \frac{2v_{yi}}{a_y}$

liq [111]3 years ago

3 0

The answer is the third graph

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if a diffraction grating produces a third-order bright spot for red light (of wavelength 650 nm ) at 68.0 ∘ from the central max

Mashutka [201]

Answer:

The angle is 25.34°.

Explanation:

Given that,

Wave length = 650 nm

Angle = 68.0°

We need to calculate the distance

For a diffraction grating

$d\sin\theta=m\lambda$

$d=\dfrac{2\times650\times10^{-9}}{\sin68.0}$

$d=2.10\times10^{-6}\ m$

We need to calculate the angle

Using formula for angle

$d\sin\theta=m\lambda$

$\sin\theta=\dfrac{m\times\lambda}{d}$

$\sin\theta=\dfrac{2\times450\times10^{-9}}{2.10\times10^{-6}}$

$\sin\theta=25.34^{\circ}$

Hence, The angle is 25.34°.

8 0

3 years ago

A generator converts blank energy into blank energy

jok3333 [9.3K]

Answer: Mechanical Energy and Electrical Energy

Explanation: A generator converts mechanical energy into electrical energy, while a motor does the opposite - it converts electrical energy into mechanical energy.

6 0

3 years ago

Determine the centripetal force on a vehicle rounding a circular curve with a radius of 80 m at a constant speed of 90 km/h if t

quester [9]

Mass of the vehicle = 2000 kg
Velocity of the vehicle = 90 km/hr
= 25 m/s
Radius of the curve = 80 m
Then
Centripetal force = [2000 * (25)^2]/80
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I hope that this is the answer that you were looking for and the answer has come to your desired help.

3 0

3 years ago

PLZZZ HELPP ASAP!!!!

Tamiku [17]

Answer:

1.68N

Explanation:

W=F*d

KE=1/2*M*V^2

M=32kg

V= 5.1m/s

D=50m

0.5(32)(5.1^2)= 416 J

Initial energy=500 J

final energy= 416 J

lost energy= 500-416

heat lost to friction=84 J

84=F*50

84/50=F*50/50

F=1.68N

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3 years ago

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drek231 [11]

Hydrogen makes stars and stars spend most of their lifetime making helium.

The heavier elements are made when an old-age, high mass star explodes as a nova or supernova and then dies.

4 0

4 years ago

Read 2 more answers