Draw in force and velocity vectors at the four marked positions the object below is moving counterclockwise in uniform circular motion

Answers

Answer 1

Answer: This is what it would look like—
Angular velocity = w
Linear velocity = v
Centripetal acceleration = ac

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Can anyone help me with this question?
Every charged particle produces ?
In the modern quantum-based atomic theory, what is the name given to a particular space around the nucleus in which an electron moves?
State the principle of transmission of pressure in liquids
a boeing 747 has a total mass, including passengers and luggage, of 250,000 kg. How much force do the engines supply to achieve a take off velocity of 990 m/s in 35 seconds.

A 1451 kg car is traveling at 48.0 km/h. How much kinetic energy does it possess? K.E. =

Answers

   Kinetic energy = (1/2) (mass) (speed)²

BUT . . . in order to use this equation just the way it's written,
the speed has to be in meters per second. So we'll have to
make that conversion.

KE = (1/2) · (1,451 kg) · (48 km/hr)² · (1000 m/km)² · (1 hr/3,600 sec)²

   = (725.5) · (48 · 1000 · 1 / 3,600)² (kg) · (km·m·hr / hr·km·sec)²

   = (725.5) · ( 40/3 )² · ( kg·m² / sec²)

   = 128,978 joules (rounded)

within a book on a desk, there are billions of forces pushing and pulling on all the molecules. why is it these forces never by chance add up to a net force in one direction, causing the book to accelerate "spontaneously" across the desk?

Answers

For exactly the same reason that all the molecules of air in the room, each one
moving at a random Gaussian-distributed speed in a random direction, never by
chance all wind up on one side of the room at the same time, leaving you to
suffocate with no air on the side where you are.

By the way, there are not billions of forces pushing and pulling on all the
molecules in the book, but we know what you mean.

The answer is in the behavior of large numbers of 'randomly distributed' things.
The behavior of any one of them is unpredictable, and completely up to chance
and the tea leaves. But the laws of Physics that lean on every molecule result
in a definite probability of how large numbers of them will behave.

The probability of the book levitating off the desk, or all the air in the room
moving to one side, is NOT zero. There is a definite probability, which can be
calculated, that either of those events will happen. But the number is so small
that it can safely be assumed to be zero, without significantly changing our
concept of what to expect in our daily life.

It's NOT correct to say that it CAN'T ever happen, but it's totally rational,
reasonable, pragmatic, and practical to live our lives as if it can never happen,
because the probability is so small.

Newton's law states that for every action there is an equal and opposite reaction. therefore as the book is pulled down (towards the desk) the desk is pushing up against the book with an equal force. (this goes for all forces

Which of the following monitors both vertical and horizontal movements along a fault? a. seismograph
b. GPS satellite system
c. Richter scale
d. Mercalli Scale

Answers

The correct answer is a. seismograph. This is the instrument used to detect and measure seismic waves. During an earthquake the infromation is recorded on a seismogram, which is the seismograph's record of earthquake waves. The GPS would monitor and measure how far a tectonic plate moves with respect to time.

Answer:

A. Is the correct answer. I just took the test.

Explanation:

Why should the lock and key be gay?

Answers

They shouldn't because it's lock and key

Answer:

.-.

Explanation:

Which electrical protective device is designed to detect a difference in current between circuit wires and interrupt the circuit and stop the flow of electricity? (1 point)a. GFCI
b. Circuit breaker
c. Fuse
d. Insulation

Answers

the electrical protective device is designed to detect a difference in current between circuit wires and interrupt the circuit and stop the flow of electricity is : A.GFCI
It stands for Grand Fault circuit interruptor, this will open the circuit when a difference in current is detected between the existing wires

Dark matter may explain _____.A.unexpected orbital velocities of stars in galaxies
B.the source of energy that fuels stars
C.the expansion of the universe
D.the origin of life
E.what came before the big bang

Answers

Answer: A.unexpected orbital velocities of stars in galaxies

Explanation:

Dark Matter makes up about 80% of matter in the universe. This matter does not emit light and hence, it is called dark matter as it cannot be observed directly.

The effect of the presence of the dark matter is unexpected orbital velocities of stars in galaxies. At the center, the orbital velocities are greater than those at the edge. Had there been no dark matter, the galaxy would have flown apart.

Dark matter may explain unexpected orbital velocities of stars in galaxies.

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Which physical property would not be useful for finding the difference between baking soda and cornstarch? a) density b) mass c) melting point d) solubility

An arch carries the thrust of weight to its _____(1)______. With a _____(2)______, the horizontal part of the structure supports all the weight above it.a. (1) center; (2) post-and-bearing b. (1) base; (2) springing line c. (1) keystone; (2) groin vault d. (1) sides; (2) post-and-lintel

The radius of the sphere is (4.3+-0.1)cm. the % error in the vol is???

Specific data such as age, income, family size, and occupation, used for marketing purposes, is called A. a secondary market.B. demographics.C. survey statistics.D. the target market.