All categories

3 years ago

An object in motion will have a speed which is a scaler , or ( blank ) which is a vector .

Physics

1 answer:

mylen [45]3 years ago

3 0

Answer:

Velocity

Explanation:

Objects in motion usually have a speed which is scalar or velocity which is a vector.

A scalar quantity is one with magnitude but has no directional attribute.

A vector quantity is one with both magnitude and directional attribute.

Speed is a scalar quantity that describes the magnitude of motion a body accrues.

Velocity is a vector quantity that describes both the magnitude of motion and the direction of motion in a body.

You might be interested in

In an X-ray photoelectron experiment, a photon of wavelength 121 pm ejects an electron from the inner shell of an atom and it em

pentagon [3]

Answer:

binding energy will be $0.1633\times 10^{-15}J$

Explanation:

We have given wavelength of photon $\lambda =121pm=121\times 10^{-12}m$

Velocity of light $c=3\times 10^8m/sec$

Plank's constant $h=6.6\times 10^{-34}Js$

So energy of photon $E=\frac{hc}{\lambda }=\frac{6.6\times 10^{-34}\times 3\times 10^8}{121\times 10^{-12}}=1.636\times 10^{-15}J$

Mass of electron $m=9.1\times 10^{-31}kg$

Velocity of electron is given $v=56.9\times 10^6m/sec$

So kinetic energy of electron $KE=\frac{1}{2}mv^2=\frac{1}{2}\times 9.1\times 10^{-31}\times (56.9\times 10^6)^2=1.473\times 10^{-15}J$

So binding energy = plank's energy - kinetic energy

$=1.636\times 10^{-15}-1.473\times 10^{-15}=0.1633\times 10^{-15}J$

So binding energy will be $0.1633\times 10^{-15}J$

4 0

4 years ago

A wire carries a current of 0.66 A. This wire makes an angle of 58° with respect to a magnetic field of magnitude 5.50 10-5 T. T

Oliga [24]

Answer:

The length of the wire is "1.93 m".

Explanation:

Given:

Current,

I = 0.66 A

Angle,

$\Theta$ = 58°

Magnetic field of magnitude,

F = $5.5\times 10^{-5}$ N

The length of the wire will be:

⇒ $F = B\times I\times L\times Sin \Theta$

or,

⇒ $L = \frac{F}{B\times I\times Sin \theta}$

By putting the values, we get

$=\frac{5.5\times 10^{-5}}{0.66\times 5.1\times 10^{-5}\times Sin \ 58^{\circ}}$

$=\frac{5.5}{2.828}$

$=1.93 \ m$

6 0

3 years ago

What is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a petri dish at a constant spee

Dahasolnce [82]

speed of the bacterium is 3.5 mm/s

$v = 3.5 mm/s$

total distance traveled by bacterium = 8.4 cm

$d = 8.4 cm = 84 mm$

time take to cover the distance

$t = \frac{d}{v}$

$t = \frac{84}{3.5} = 24 s$

<em>so it will take 24 s to move this distance</em>

7 0

4 years ago

falling parachutist you bail out of the helicopter of example 3 and pull the ripcord of your parachute. now in eq. (3), so your

Rasek [7]

You bail out of a helicopter and immediately open your parachute, so your downward velocity satisfies the initial value problem.

<h3>What is velocity ?</h3>

Velocity is the rate of change in direction of an item in motion as seen from a specific point of view and as measured by a specific unit of time. In kinematics, the area of classical mechanics that studies how bodies move, velocity is a fundamental idea.

A physical vector quantity called velocity requires both magnitude and direction to be defined. Speed, a coherently derived unit whose quantity is measured in the SI (metric system) as metres per second, is the scalar absolute value (magnitude) of velocity. For instance, "5 meters per second" is a scalar while "5 meters per second east" is a vector.

To learn more about velocity from the given link:

brainly.com/question/80295?source=archive

#SPJ4

8 0

1 year ago

A boy pushes on a wagon so that it accelerates at a rate of 0.50 m/s2. The wagon has a mass of 24 kg. What is the magnitude of t

IRISSAK [1]

Answer:

12N

Explanation:

Force acting on any body is equal to mass of body multiplied by acceleration produced in the body.

Its formula is

F = M*a

where F is the force acting on body

M is the mass of the body

a is the acceleration produced in the body

Unit of force is Newton represented by N

1 N is force acting on body of mass 1 kg which produces acceleration of 1m/s^2.

_____________________________________

Given

a = 0.50 m/s^2

M = 24 kg

therefore

F = 24*0.5 = 12 N

Thus, magnitude of the boy's pushing force is 12 N.

4 0

4 years ago