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3 years ago

Drag each tile to the correct location.

Physics

1 answer:

scoray [572]3 years ago

7 0

Answer:

Relative: meredith's birth, the planting of jasmine's tree, and the extinction of the stegosaurus

Absolute: harrison's birth, the building of jasmine house, and the extinction of the triceratops

Explanation: plato

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The table represents the speed of a car in a northern

Sidana [21]

Answer:

O Column 1 should be titled "Time," and Column 2 shouldbe titled "Velocity,"

O Column 1 should be titled "Velocity," and Column 2 should be titled "Time."

O Column 1 should be titled "Time," and Column 2 should be titled "Acceleration."

O Column 1 should be titled "Acceleration," and Column 2 should be titled "Time."

4 0

3 years ago

A 800-gram grinding wheel 27.0 cm in diameter is in the shape of a uniform solid disk. (We can ignore the small hole at the cent

SSSSS [86.1K]

Explanation:

d = Diameter of wheel = 27 cm

r = Radius = $\frac{d}{2}=\frac{27}{2}=13.5\ cm$

m = Mass of wheel = 800 g

$\omega_i$ = Initial angular velocity = $245\times \frac{2\pi}{60}\ rad/s$

Equation of rotational motion

$\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\frac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\frac{0-245\times \frac{2\pi}{60}}{50}\\\Rightarrow \alpha=-0.51312\ rad/s^2$

Moment of inertia is given by

$M=\frac{1}{2}mr^2\\\Rightarrow M=\frac{1}{2}\times 0.8\times 0.135^2\\\Rightarrow M=0.00729\ kgm^2$

Torque is given by

$\tau=I\alpha\\\Rightarrow \tau=0.00729\times -0.51312\\\Rightarrow \tau=-0.0037406448\ Nm$

The torque the friction exerts is -0.0037406448 Nm

For more information on torque and moment of inertia refer

brainly.com/question/13936874

brainly.com/question/3406242

7 0

3 years ago

A wye-connected load has a voltage of 480v applied to it. What is the voltage drop across each phase

rodikova [14]

Answer:

$Y_A=277.128 \angle 30v$

$Y_B=277.128 \angle (-150)v$

$Y_C=277.128 \angle (90)v$

Explanation:

From the question we are told that

Voltage $V_L_L =480v$

Generally in a case of Y_connection $V_p_ h$ is mathematical represented as

$V_p_h=\frac{V_l_l}{\sqrt{3}} \angle (\phi-30)v$

Generally voltage drop across phase A

$Y_A=\frac{408}{\sqrt{3}} \angle -(0-30)$

$Y_A=277.128 \angle 30v$

Generally voltage drop across phase B

$Y_B=277.128 \angle (-30-120)$

$Y_B=277.128 \angle (-150)v$

Generally voltage drop across phase C

$Y_C=277.128 \angle (-30+120)$

$Y_C=277.128 \angle (90)v$

3 0

3 years ago

un proyectil parte de su reposo con una aceleracion de 9.5 m/s si su aceleracion es constante determine en que tiempo va ha alca

IRISSAK [1]

Responder:

Explicación:

Usando una de las ecuaciones de movimiento expresadas como;

v = u + en donde;

v es la velocidad final del objeto

u es la velocidad inicial del objeto

a es la aceleración

t es el tiempo que toma

Parámetros dados

v = 150 m / s

u = 0 m / s

a = 9,5 m / s²

Necesario

tiempo tomado

Al sustituir los parámetros dados en la fórmula

150 = 0 + 9.5t

9,5 t = 150

Dividiendo ambos lados por 9.5

9,5 t / 9,5 = 150 / 9,5

t = 15,79 segundos

Por lo tanto, el tiempo que alcanzará una velocidad de 150 m / s es de 15,79 segundos.

6 0

3 years ago

个

Nikitich [7]

Answer:

kinetic energy = 18 joules

Explanation:

here's the solution :-

=》

$k.e. = \frac{1}{2} \times m {v}^{2}$

=》

$k.e. = \frac{1}{2} \times 4 \times 3 \times 3$

=》

$k.e. = 2 \times 9$

=》

$k.e. = 18$

4 0

3 years ago