Physics College

Find the direction of this vector.
80.0°
B-18.6 m
0 = [?]°
Hint: Remember, 0 is the direction of the
vector and is measured from the +x-axis.

Find The Direction Of This Vector.80.0B-18.6 M0 = [?]Hint: Remember, 0 Is The Direction Of Thevector

Answers

Answer 1

The direction of the given vector B of 18.6 m that is 80° left of the positive y-axis is 170°

Angle of the vector made with positive y-axis = 80°

Angle between positive x and y axis = 90°

Direction of B, θ = 90° + 80°

θ = 170°

Direction of a vector is the angle of the vector that is made with positive x-axis. A vector with a certain direction of certain degrees means that the vector is rotated that much degrees in counter-clockwise direction relative to positive x-axis.

Therefore, the direction of the vector B is 170°

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Related Questions

If each wafer can hold 400 chips, what is the maximum number of chips that can be produced from one entire cylinder?

Answers

The maximum number of chips is 33,333

What is a chip?

A chip is a tiny but complex modules that store computer memory or provide logic circuitry for microprocessors.

We need to find the number of wafers that can be cut from a single crystal.

The crystal is 25cm and each wafer is 0.3mm. We perform division to get the number of wafers per crystal after getting everything into the same units. 25cm=250mm.

250mm/0.3mm=833.3333 wafers.

Each wafer yields 400 chips so we multiply 400 chips per wafer by 833.33 wafers to get 33,333 chips.

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A series of ocean waves, 5.0 m between crests, move past at 2.0 waves/s. Find their speed.​

Answers

Answer:

10 m/s

Explanation:

Speed = wavelength * frequency

       =   5 m   *  2 / s   = 10 m/s

Evaporation takes place at the surface of a liquid , use particle model of matter to explain evaporation?

Answers

Explanation:

These "more energetic particles" may have

sufficient energy to escape from the surface

of the liquid as gas or vapour.... Evaporation

takes place at room temperature which is

often well below the boiling point of the

liquid. Evaporation happens from the surface

of the liquid.

Two objects are held close together. When they are released, they move toward one another. Which conclusion is
supported by this evidence?

Answers

Answer:

They are attracted to each other. Maybe a magnet. Like 99% sure.

Explanation:

Objects that are usually attracted to each other are magnets. When you release two magnets close to each other, with each pole opposite to the other, they move toward each other and stick. You can only take them apart by force.

The objects have opposite charges.

Explain why it’s much colder at the bottom of the pool than at the top. also describe what heat transfer processes is taking place

Answers

Heat transfer by radiation and convection causes the surface water of the pool to be warm which decreases with depth.

Why is it colder at the bottom of the pool than the top of the pool?

There are two heat transfer process responsible for variation in temperature of water at different depth of a pool, they include;

Heat transfer by radiationHeat transfer by convection

Heat transfer by radiation

The surface of the water absorbs heat from the air and the sun. The heat from the sun is transferred to the pool through radiation.

Heat transfer by convection

The heat from the air is transferred to the pool through convection.

Thus, these two heat transfer processes  causes the surface water of the pool to be warm which decreases with depth.

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A runner of mass 58.7 kg starts from rest and accelerates with a constant acceleration of 1.07 m/s2 until she reaches a velocity of 7.5 m/s. She then continues running with this constant velocity.

a) How far has she run after 53.3 seconds?
b) What is the velocity of the runner at this point?

Answers

A. The distance travelled after 53.3 seconds is 1919.63 m

B. The velocity of the runner ath the given time is 64.53 m/s

A. How to determine the distance travelled after 53.3 seconds

The distance travelled can be obtained as follow:

Initial velocity (u) = 7.5 m/sAcceleration (a) = 1.07 m/s² Time (t) = 53.3 secondsDistance (s) =?

s = ut + ½at²

s = (7.5 × 53.3) + (½ × 1.07 × 53.3²)

s = 399.75 + (0.535 × 2840.98)

s = 399.75 + 1519.87615

s = 1919.63 m

Thus, the distance travelled in 53.3 seconds is 1919.63 m

B. How to determine the velocityInitial velocity (u) = 7.5 m/sAcceleration (a) = 1.07 m/s² Time (t) = 53.3 secondsFinal velocity (v) =?

v = u + at

v = 7.5 + (1.07 × 53.3)

v = 7.5 + 57.031

v = 64.53 m/s

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an upward force of 170 N IS APPLIED TO A BOX WEIGHING 50 N DRAW A FREEBODY FORCE DIAGRAM FOR THIS SITUATION

Answers

A free body diagram of the box consists of weight of the box (50N) acting downwards, normal reaction acting upwards and applied force acting in x-direction.

What is free body diagram?

A free-body diagram is a sketch of an object of interest with all the surrounding objects stripped away and all of the forces acting on the body shown.

The forces on the box;

applied force, acting forward, F = 170 Nweight of the box, acting downwards, W = 50 Nnormal reaction of the box acting upwards,  R = W = 50 N

The free body diagram of the forces acting on the box is illustrated as follows;

                                ↑ R

                      F    → Ф

                                ↓ W

Thus, a free body diagram of the box consists of weight of the box (50N) acting downwards, normal reaction acting upwards and applied force acting in x-direction.

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What is the volume of a rock with a density of 45 g/mL and a mass of 855 g?

Answers

The volume of a rock with a density of 45 g/mL and a mass of 855g is 19mL.

How to calculate volume?

The volume of a gas can be calculated by dividing the mass of the substance by its density as follows:

Volume = mass ÷ density

According to this question, a rock has a density of 45 g/mL and a mass of 855g. The volume can be calculated as follows:

Volume = 855g ÷ 45g/mL

Volume = 19mL

Therefore, the volume of a rock with a density of 45 g/mL and a mass of 855g is 19mL.

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