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
jeka94
3 years ago
14

A car moves in a straight line at a speed of 72.1 km/h.

Physics
1 answer:
nikklg [1K]3 years ago
5 0

Speed=distance/time.

7.74mins=464.4secs.

72.1=distance/464.4.

distance=464.4×7.21.

=3348.324m.

You might be interested in
1. How can researchers, educators, and policymakers encourage journalists and others to discuss
Setler79 [48]

Correlational studies do not form the  decision making or discussion because they do not offer conclusive evidence.

<h3>What are correlational findings?</h3>

The term correlational findings refers to research findings that only show the association between variables. This is a kind of research that does not establish causation but suggests a strong link between two variables.

This kind of study should not form the basis for decision making or discussion because they do not offer conclusive evidence about an issue. this kind of findings should e taken with a pinch of salt until the data is further confirmed by experimental studies.

Learn more about correlational findings:brainly.com/question/15411622

#SPJ1

6 0
2 years ago
a fixed amount of ideal gas is held in a rigid container that expands negligibly when heated. at 20 the gas pressure is p. if we
pantera1 [17]

Answer:

When the temperature of the gas is increased from 20 to 40, the pressure will be 2p

Explanation:

Given;

initial temperature of the gas, T₁ = 20 K

final temperature of the gas, T₂ = 40 k

initial pressure of the gas, P₁ = P

final pressure of the gas, P₂ = ?

Apply pressure law of gases;

\frac{P_1}{T_1} = \frac{P_2}{T_2} \\\\P_2 = \frac{P_1T_2}{T_1} \\\\P_2 = \frac{40P}{20} \\\\P_2 = 2P

Therefore, when the temperature of the gas is increased from 20 to 40, the pressure will be 2p

5 0
3 years ago
A rope pulls a 82.5 kg skier at a constant speed up a 18.7° slope with μk = 0.150. How much force does the rope exert?
Artist 52 [7]

Answer:

374 N

Explanation:

N = normal force acting on the skier

m = mass of the skier = 82.5

From the force diagram, force equation perpendicular to the slope is given as

N = mg Cos18.7

μ = Coefficient of friction = 0.150

frictional force is given as

f = μN

f =  μmg Cos18.7

F = force applied by the rope

Force equation parallel to the slope is given as

F - f - mg Sin18.7 = 0

F - μmg Cos18.7 - mg Sin18.7 = 0

F = μmg Cos18.7 + mg Sin18.7

F = (0.150 x 82.5 x 9.8) Cos18.7 + (82.5 x 9.8) Sin18.7

F = 374 N

6 0
4 years ago
The weight on the moon is....<br>that of earth.​
Elena L [17]

Answer:

16.5% that of on earth

Explanation:

from google:

Your weight on the Moon is 16.5% what you would experience on Earth. In other words, if you weighed 100 kg on Earth, you would weigh a mere 16.5 kg on the Moon. 

6 0
4 years ago
Professional Application: A 30,000-kg freight car is coasting at 0.850 m/s with negligible friction under a hopper that dumps 11
Nataliya [291]

Answer:

0.182 m/s

Explanation:

m1 = 30,000 kg, m2 = 110,000 kg, u1 = 0.85 m/s

let the velocity of loaded freight car is v

Use the conservation of momentum

m1 x u1 + m2 x 0 = (m1 + m2) x v

30,000 x 0.85 = (30,000 + 110,000) x v

v = 0.182 m/s

5 0
3 years ago
Other questions:
  • Can enter through any cavity lined with mucus membranes
    13·1 answer
  • g 23.) [1 point] Which statement about images (formed by spherical mirrors and thin lenses) is true? Group of answer choices All
    7·1 answer
  • Similarities between land and sea breezes?
    15·1 answer
  • What % of an object’s mass is above the water line if the object’s density is 0.82g/ml?
    13·1 answer
  • Suppose a spring with spring constant 9 N/m is horizontal and has one end attached to a wall and the other end attached to a mas
    7·1 answer
  • According to a general theory of crime, individuals who engage in crime are also likely to engage in other risky behaviors, for
    9·1 answer
  • Magnesium (Mg) has two electrons in its outermost energy level. Oxygen (O) has six. How can a Mg atom body with an O atom?
    14·2 answers
  • Which of the following objects exerts a gravitational force?
    7·2 answers
  • Could someone help me with this?
    8·1 answer
  • Which pair of atoms will form a covalent bond? a. One atom of Fluorine and two atoms of Oxygen
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!