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3 years ago

Please help!!!! How many volts does this source provide for the circuit? 2 4 8 12

Physics

1 answer:

velikii [3]3 years ago

6 0

Answer:

12 volts

Explanation:

4 + 4 + 4 = 12 volts all volts on parallel circuit are the same

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You fire a projectile 35° above horizontal with an initial velocity of 200m/s. It lands in a valley 300m below the launch point.

Brilliant_brown [7]

Answer:

See below

Explanation:

Vertical component of initial velocity = 200 sin 35° = 114.72 m/s

then use position formula a = 9.81 m/s^2

0 = 300 + 114.72 t - 1/2 (9.81)(t^2)

use quadratic formula with a = - 4.905 b = 114.72 c = 300

to find t = 25.76 seconds

To find the range

( horizontal distance the projectile lands from launch point)

Horizontal component of initial velocity 200 cos 35 = 163.83 m/s

( it flies horizontally at this speed for 25.76 seconds <==found above)

163.83 m/s * 25.76 s = 4220.3 meters

3 0

2 years ago

When a rigid body rotates about a fixed axis, all the points in the body have the same A. centripetal acceleration B. tangential

Leto [7]

Answer:

The angular acceleration is same at all the points in the body.

Option (D) is correct.

Explanation:

Given:

When a rigid body rotates about a fixed axis, all the points in the body have the same,

For finding which quantity is same we use pure rotational concept,

$v = \omega r$

Where $\omega =$ angular frequency, $r =$ radius of rigid body

When a rigid body rotates about a fixed axis angular velocity of all the points in the body are same.

But the tangential speed, tangential acceleration, linear displacement, and centripetal acceleration depend on the position of the points and hence they are not the same.

Therefore, the angular acceleration is same at all the points in the body.

8 0

3 years ago

Please help

natali 33 [55]

Answer:

Thermosphere

temperature continue to rise up to 1500*C

Ionosphere

Mesosphere

temperature falls to -93*C

Stratosphere

protective ozone layer

UV radiation causes temperature to rise

Troposphere

78% nitrogen, 21% oxygen

temperature drops from 17 to -52*C

Explanation:

3 0

3 years ago

A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead, the pipe's diameter is 50.9 c

seraphim [82]

Answer:

Flow rate 2.34 m3/s

Diameter 0.754 m

Explanation:

Assuming steady flow, the volume flow rate along the pipe will always be constant, and equals to the product of flow speed and cross-section area.

The area at the well head is

$A = \pi r_w^2 = \pi (0.509/2)^2 = 0.203 m^2$

So the volume flow rate along the pipe is

$\dot{V} = Av = 0.203 * 11.5 = 2.34 m^3/s$

We can use the similar logic to find the cross-section area at the refinery

$A_r = \dot{V}/v_r = 2.34 / 5.25 = 0.446 m^2$

The radius of the pipe at the refinery is:

$A_r = \pi r^2$

$r^2 =A_r/\pi = 0.446/\pi = 0.141$

$r = \sqrt{0.141} = 0.377m$

So the diameter is twice the radius = 0.38*2 = 0.754m

6 0

3 years ago

What does the diagram show about phases and the phase of the substance as it is heated? Check all that apply.

Romashka [77]

Answer:

2 and 4

Explanation:

right on edge

7 0

3 years ago

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