Cell phones use digital signals to send and receive information. These digital signals travel as what kind of wave?ОООО
Gamma rays
X-rays
Microwaves
Radio waves

Answer:

The torque about the origin is 5.0 N.

Explanation:

To calculate the torque (τ) about the origin, you need to know both the force (F) and the position vector (r) from the origin to the point where the force is applied. The formula for torque is:

τ = r × F

Where:

- τ is the torque vector.

- r is the position vector.

- F is the force vector.

In this case, you're given the force vector F = 5.0 y N, where "y" represents the unit vector in the y-direction.

Assuming that the particle is located at a position where the position vector r is given as (x, y), you need to express the position vector in terms of unit vectors. Since the force is applied along the y-axis, you can write the position vector as:

r = x i + y j

Now, you can calculate the torque:

τ = r × F

τ = (x i + y j) × (5.0 y N)

When you take the cross product, the component of the position vector along the direction of the force will contribute to the torque. In this case, only the y-component of the position vector (y j) is along the direction of the force (5.0 y N).

So, the torque about the origin is:

τ = y (5.0 y N)

Now, you can calculate the magnitude of the torque:

|τ| = |y (5.0 y N)| = 5.0 |y|^2 N

The magnitude of the unit vector "y" is 1, so:

|τ| = 5.0 N

The torque about the origin is 5.0 N.

There is a chemical change because the liquid water, after passing an electric current, produces hydrogen and oxygen gases. This is a reaction. The molecular component of eater has been broken down into two. These two gases have different structures compared to water.

Answer:

a)0.9675 h

b)5.168 mph

c)0.885 h

d)5.65 mph

Explanation:

The distance travelled by a moving object can be calculated as the velocity multiplied by the time, for this problem we can divide the problem in two stages, one where the are walking and another where they run,

Considering the total time for Anya is :

She first walks for half the distance (2.5 miles) so:

Solving for :

Then she runs the other half of the distance:

Adding this two durations we have the total time it takes for Anya to cover the distance:

The average velocity can be calculated as the total distance divided by the total time:

Considering the total time for Ilya is :

She first walks for half the time so:

Where is the velocity when walking (same for both people). On the second half she runs:

This two distances must sum the total distance 5 miles, so:

replacing the expressions above:

so it takes Ilya 0.885 hours to to cover the distance

The average velocity can be calculated as the total distance divided by the total time:

Answer:

TRUE

Explanation:

There are different types of transformations, such as rotation, translation or symmetry.

Translation is a type of transformation in which the figure or plane moves all in the same direction.

When a translation is made, the dimensions or measures are not affected. What changes is the position of the figure.

Answer:

4 A

Explanation:

V = IR, where V=voltage, I=current, R=resistance. This is Ohm's Law. (remember that for units V = volts, Ω = ohms, A = amperes.)

V = IR

12 V = I * 3 Ω

12/3 = I

I = 4 A