4. Why do you think people in south Louisiana specialize in seafood?

Match the vocabulary terms to their definitions.

DedPeter [7]

Answer:

Distance- The length along a path between two points .

Velocity- The rate and direction at which an object moves .

Displacement- The net change in position of an object .

Vector- A measurement that has both magnitude and direction .

Speed- Measure of the rate at which an object changes position .

Momentum- The mass of an object multiplied by its velocity.

Explanation:

Vector: A physical quantity having both magnitude and direction is called Vector quantity. Example: Displacement, Velocity, Acceleration, Force etc.

On the other hand , quantity having only magnitude is called Scalar. Example: Distance, Speed, Time, Current etc.

Distance: The totle length of path traversed by a body in certain time is called distance. It is scalar quantity as it has only magnitude. SI unit of distance is meter.

Displacement: It is defined as change in position of a body in given period of time. Actually it is the distance between initial and final position along with given direction. So it is vector quantity. SI unit is meter.

Speed: The rate at which distance is traveled with respect to time is called speed.It is scalar quantity. SI unit is meter/second.

$Speed=\frac{Distance}{Time}$

Velocity: It can be defined as rate of change in position or displacement with respect to time.It is vector quantity. SI unit is meter/second.

$Velocity=\frac{Displacement}{Time}$

Momentum: The amount of motion contain in a body is the momentum. It is defined as product of mass and velocity. It is vector quantity. SI unit is kg.meter/second

Momentum=Mass×Velocity

7 0

3 years ago

Read 2 more answers

A stone of 1 kg is thrown with a velocity of 40 m/s across the frozen surface of a lake and comes to rest after travelling a dis

yawa3891 [41]

Answer:

C)-16 N

Explanation:

concepts used

force = mass* acceleration

equation of motion

$v^2 = u^2 + 2as$

where v is the final velocity

u is the initial velocity

and s is the distance moved

______________________________________________

Given

mass = 1 kg

initial velocity (u) = 40m/s

final velocity (v) = 0 as stones comes to rest

distance moved by stone (s) = 50m

using $v^2 = u^2 + 2as$

$0 = 40^2 +2a*50\\=> -1600 = 100a\\=> a = -1600/100 = -16$

Thus, acceleration is -16 m/s^2

here acceleration is negative as force of friction is opposing the motion.

Force of friction = mass of stone * acceleration of stone

Force of friction = 1*-16 kgm/s^2 = -16N ( kgm/s^2 = 1 N)

Thus, option c -16N is correct choice.

4 0

3 years ago

Where is the kinetic energy and potential energy equal on a pendulum?

Alenkasestr [34]

-- ends of the swing . . . . . all potential energy, no kinetic

-- middle of the swing . . . . all kinetic energy, no potential

-- Potential energy and kinetic energy are equal at the points
(one on each side of the swing) where the bob is at a height
that is midway between the height at the end of the swing and
the height at the bottom of the swing.

6 0

3 years ago

A thin 1.5 mm coating of glycerine has been placed between two microscope slides of width 0.8 cm and length 3.9 cm . Find the fo

Radda [10]

The force required to pull one of the microscope sliding at a constant speed of 0.28 m/s relative to the other is zero.

<h3>Force required to pull one end at a constant speed</h3>

The force required to pull one of the microscope sliding at a constant speed of 0.28 m/s relative to the other is determined by applying Newton's second law of motion as shown below;

F = ma

where;

m is mass
a is acceleration

At a constant speed, the acceleration of the object will be zero.

F = m x 0

F = 0

Thus, the force required to pull one of the microscope sliding at a constant speed of 0.28 m/s relative to the other is zero.

Learn more about constant speed here: brainly.com/question/2681210

3 0

2 years ago

You drop an ice cube into an insulated bottle full of water and wait for the ice cube to completely melt. The ice cube initially

AVprozaik [17]

Answer:

$T_{f}$ = 17º C

Explanation:

This is a calorimetry problem, where heat is yielded by liquid water, this heat is used first to melt all ice, let's look for the necessary heat (Q1)

Let's reduce the magnitudes to the SI system

Ice m = 80.0 g (1 kg / 1000 g) = 0.080 kg

L = 3.33 105 J / kg

Water M = 860 g = 0.860 kg

$c_{e}$ = 4186 J / kg ºC

Q₁ = m L

Q₁ = 0.080 3.33 10⁵

Q₁ = 2,664 10⁴ J

Now let's see what this liquid water temperature is when this heat is released

Q = M $c_{e}$ ΔT = M $c_{e}$ (T₀₁ - $T_{f1}$ )

Q₁ = Q

$T_{f1}$ = T₀₁ - Q / M ce

$T_{f1}$ = 26.0 - 2,664 10⁴ / (0.860 4186)

$T_{f1}$ = 26.0 - 7.40

$T_{f1}$ = 18.6 ° C

The initial temperature of water that has just melted is T₀₂ = 0ª

The initial temperature of the liquid water is T₀₁= 18.6

m $c_{e}$ $T_{f}$ + M $c_{e}$ $T_{1}$ = M $c_{e}$ T₀₁ - m $c_{e}$ T₀₂o2

$T_{f}$ = (M To1 - m To2) / (m + M)

$T_{f}$ = (0.860 18.6 - 0.080 0) / (0.080 + 0.860)

$T_{f}$ = 17º C

gg

4 0

3 years ago