1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yKpoI14uk [10]
2 years ago
14

What will be the final velocity of a 5.0 g bullet starting from rest, if a net force of 45 N is

Physics
1 answer:
djverab [1.8K]2 years ago
5 0

The net force performs a total amount of work equal to

(45 N) (0.80 m) = 36 J

on the bullet, and this is in turn is equal to the change in the bullet's kinetic energy by the work-energy theorem. So we have

W = ∆K = 1/2 mv²

since the bullet starts at rest, where m = its mass and v = its final velocity.

Solve for v :

36 J = 1/2 (0.0050 kg) v²   ⇒   v = 120 m/s

You might be interested in
A pizza delivery must make three stops on her route. She will first leave the restaurant and travel 4km due north to the first h
miss Akunina [59]

5.3 km

This question involves continuous displacement in various directions. When it becomes difficult to imagine, vector analysis becomes handy.

Let us denote each of the individual displacements by a vector. Consider the unit vectors as the unit vectors in the direction of East and North respectively.

By simple calculations, we can derive the unit vectors j,\frac{-i-j}{2} and in the directions North,  South of West, and  North of West respectively.

So Total displacement vector = The Sum of individual displacement vectors.

Displacement vector = -4.25i + 3.165j

The magnitude of Displacement =| -4.25i + 3.165j |  = 5.3km

∴ Total displacement = 5.3km

A displacement is a vector in geometry and mechanics that have a length equal to the shortest distance between a point P's initial and final positions.  It measures the length and angle of the net motion, or total motion, in a straight line from the starting point to the destination of the point trajectory. The translation that links the starting point and the ending point can be used to spot a displacement.

The final location xf of a point relative to its beginning position xi, or a relative position (derived from the motion), is another way to express a displacement. The difference between the final and initial coordinates can be used to define the equivalent displacement vector.

To  learn more about displacement from the given link:

brainly.com/question/11934397

#SPJ9

4 0
2 years ago
Each diagram shows a single experimental trial in which you will drop a ball from some height. in each case, the ball's size, ma
enot [183]
<span>The simplest way to test the effects of mass is to compare the results of two trials that are identical except for the mass of the balls. In the language of experimental design, we say that the mass is the "variable of interest" for this experiment, and we therefore hold the other variables (size and height) constant so that they cannot affect the results.</span>
5 0
4 years ago
A 120 V fish-tank heater is rated at 130W. Calculate (a) the current through the heater when it is operating, and (b) its resist
7nadin3 [17]

Explanation:

The power P dissipated by a heater is defined as

P = VI

where V is the voltage and I is the current.

a) The current running through a 130-W heater is

I = \dfrac{P}{V} = \dfrac{130\:\text{W}}{120\:\text{V}} = 1.08\:\text{A}

b) The resistance <em>R</em><em> </em>of the heater is

P = VI = (IR)I = I^2R

where V= IR is our familiar Ohm's Law.

\Rightarrow R = \dfrac{P}{I^2} = \dfrac{130\:\text{W}}{(1.08\:\text{A})^2}

R = 110.8\:Ω

8 0
3 years ago
17. (16 pts) You set up a two-slit experiment with a laser that produces light with a
Natali [406]

when the two waves interfere with eachother to make a dark spot the periodic difference of the two waves is π . the wave length for 2π is 600nm

. ie. for π difference it is 300nm

4 0
4 years ago
Which statements did both Aristotle and Ptolemy assume? Check all that apply.
tensa zangetsu [6.8K]

Bodies in space traveled in circles.

The planets revolved around the Earth.

6 0
3 years ago
Read 2 more answers
Other questions:
  • What effect does Earth’s spherical shape have on the amount of sunlight that reaches the equator?
    14·1 answer
  • Suppose we were to attempt to use a similar machine to measure the charge-to-mass ratio of protons, instead. Suppose, for simpli
    9·1 answer
  • How long will it take a car to go from a complete stop to 44 m/s if they are
    7·1 answer
  • The inside of a race car often looks very different from the inside of a normal car. Race car teams often remove seats and other
    13·1 answer
  • Mary is allergic to cats. Mary's friend, Sue, has a roommate who has cats. Whenever Mary visits Sue, Mary sneezes even before sh
    12·1 answer
  • I’m confused how do you right that in OZ someone please help I have to turn it in
    15·1 answer
  • According to the article, what is modeling therapy?
    11·2 answers
  • Define stress engineering science​
    6·1 answer
  • Pls help<br><br> What is the frequency range of UV light? Of infrared light?
    14·1 answer
  • A 500 Kg load is lifted through a vertical height of 10m in 25s by a crane. Calculate the power of the crane
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!