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3 years ago

Which vector should be negative?

Physics

1 answer:

pentagon [3]3 years ago

7 0

Answer:

The velocity of a falling object

Explanation:

The positive X axis is towards right and positive Y axis is towards up, so North direction is positive

A vector with less than 1 magnitude is not negative, because its magnitude may be in between 0 and 1 which is positive vector.

Any vector whose magnitude is greater than 1 is never be a negative vector.

The velocity of a falling object is towards bottom, that is towards negative Y axis. So that vector is negative.

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Dimension of force of gravity is

statuscvo [17]

Answer:

$M^{-1}L^{3}T^{-2}$

Explanation:

Force has the unit N for Newton.

A Newton is $m*\frac{kg}{s^{2} }$ , mass*kilograms/seconds^2.

Dimensions in Physics include things such as Mass, Length, and Time.

kg is Mass

m is Length

s^2 is Time

So, since a Newton has all of these, it has T, L, and M. Force has dimensions $T^{-2}LM$

However, you must now consider gravitational force.

Law of Gravitation states:

$F=\frac{Gm_{1}m_{2}r }{r^{2} }$

Convert that into a fraction with dimensions:

$F=\frac{GM^{2} L}{L^{2} }$

Remember force is $T^{-2}LM$

Use the dimensions of force to find gravitational force, or G:

$F=\frac{GM^{2} L}{L^{2} }$

$T^{-2}LM=\frac{GM^{2} L}{L^{3} }$

$G=\frac{(T^{-2}LM)(L^{2}) }{M*M}$

$G=\frac{(T^{-2}L^{3} M) }{M^{2} }$

$G=M^{-1}L^{3}T^{-2}$

5 0

3 years ago

It takes a car traveling at 18 m/s, 240 seconds to reach Chick-Fil-A from the school. Determine how far Chick-Fil-A is from the

777dan777 [17]

Answer:

The requested distance is 4320 meters

Explanation:

We can use the formula for velocity in this movement at constant velocity (v), which is defined as the quotient between the distance covered divided the time it took:

$v=\frac{distance}{time}$

Since we know the velocity and the time, we can solve for the distance:

$\neq v=\frac{distance}{time} \\18\,\frac{m}{s} = \frac{distance}{240\,\,s} \\distance=18\,*\,240\,\,m\\distance= 4320\,\,m$

8 0

3 years ago

What is TeO3 compound name

Stolb23 [73]

Tellurium trioxide

Hope this helps you!!!

4 0

3 years ago

Read 2 more answers

What regulatory requirements must be met prior to a pilot acting as PIC of an aircraft towing a glider?

Klio2033 [76]

Answer:

According to the federal aviation regulation for tow pilot, there are three regulatory requirements to be met.

Explanation:

1. The Pilot must hold at least a private pilot certificate with a category rating for powered aircraft.

2. The Pilot must have logged at least 100 hours of pilot-in-command time in the aircraft category.

3. The Pilot must have a logbook endorsed by an authorized instructor who certifies that the person has received ground and flight training in gliders and is proficient in the following;

a. Procedures and techniques of safe towing of gliders.

b. Signal use.

c. Bank maximum angles.

d. Emergency procedures.

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4 years ago

Define Women Empowerment.

djyliett [7]

Answer:

Women's empowerment is all about equipping and allowing women to make life-determining decisions through the different problems in s

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3 years ago