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
katrin2010 [14]
3 years ago
11

A skateboarder who travels 60 meters in 30 seconds has a speed of

Physics
1 answer:
natulia [17]3 years ago
4 0

2m/s

Explanation:

Given parameters:

Distance traveled = 60m

time taken = 30seconds

Unknown:

Speed of skateboarder = ?

Solution:

Speed is the rate of change of distance with time taken. It is a scalar quantity that only revers magnitude;

    Speed = \frac{distance}{time}

    Speed = \frac{60}{30} = 2m/s

learn more:

Speed brainly.com/question/1548911

#learnwithBrainly

You might be interested in
Form a hypothesis about how deeply water could erode and about how deeply glaciers could erode
Softa [21]
A hypothesis is an educated guess. It's your own opinion!
8 0
3 years ago
Why do scientist use different types of models to represent compounds
nexus9112 [7]
Because they are different they all show different traits.
5 0
3 years ago
The solution to a disjunction is the what of the two solutions
astra-53 [7]

Answer:

The solution set of a disjunction is the union of the solution sets of the individual inequalities. A convenient way to graph a disjunction is to graph each individual inequality above the number line, then move them both onto the actual number line

Explanation:

6 0
3 years ago
I need help with this physics question
insens350 [35]
It's impossible to describe WHERE a place is without mentioning ANOTHER place.

... Across the street from -- the bank.
... Next door to -- my house.
... 30 miles west of -- Chicago.
... Up above -- the tree.
... Two days ride out of -- Tulsa.
... Halfway home from -- school.
... Twice as far from Earth as -- the moon is.
... The first seat in -- the second row.
... Behind -- the dog's left ear.
... At the bottom of -- the pool.
... On the tip of -- my tongue.
... In the front seat of -- the car.
... I saw you in -- my dream.
... You're always on -- my mind.

The question is trying to get you to realize that to get from a reference point to a certain position, you have to know

How far
and
In what direction.
4 0
3 years ago
The hydraulic oil in a car lift has a density of 8.30 102 kg/m³. The weight of the input piston is negligible. The radii of the
denpristay [2]

Answer:

(a) F_i=68.58\ N

(b) F_i=69.903\ N

Explanation:

Given:

  • density of hydraulic oil, \rho=830\ kg.m^{-3}
  • radius of input piston, r_i=6.3\times 10^{-3}\ m
  • radius of output plunger, r_o=0.125\ m
  • force to be supported, F_o=27000\ N

(a)

<u><em>Condition:</em></u><em>The bottom surfaces of piston and plunger at the same level.</em>

According to Pascal's law the pressure of a fluid is exerted equally in all directions against the walls of its container.

Mathematically:

\frac{F_i}{A_i} =\frac{F_o}{A_o}

putting respective values

\frac{F_i}{\pi\times r_i^2} =\frac{27000}{\pi\times r_o^2}

\frac{F_i}{\pi\times (6.3\times 10^{-3})^2} =\frac{27000}{\pi\times 0.125^2}

F_i=68.58\ N

(b)

<u><em>Condition:</em></u><em>The bottom surface of the output plunger is 1.30 m above that of the input piston.</em>

Given:

h=1.3\ m

Now,

P_i=P_o+\rho.g.h

\frac{F_i}{\pi\times (6.3\times 10^{-3})^2} =\frac{27000}{\pi\times 0.125^2} +830\times 9.8\times 1.3

F_i=69.903\ N

7 0
3 years ago
Other questions:
  • Natalie and Will are discussing socialization. Natalie says that socialization occurs when an animal becomes accustomed to the p
    10·2 answers
  • An atom is.......Help?
    11·1 answer
  • A bomb at rest at the origin of an xy-coordinate system explodes into three pieces. Just after the explosion, one piece, of mass
    10·1 answer
  • Which of the following explains why metallic bonding only occurs between
    6·1 answer
  • Which of the following statements describes the movement of air?
    13·1 answer
  • Formulating a Hypothesis: Part I Since the investigative question has two variables, you need to focus on each one separately. T
    6·2 answers
  • Directions: WRITE a summary of the Newton’s Laws of Motion reading.
    9·1 answer
  • The urethra extends from the:
    5·1 answer
  • How far does an object travel if it is moving at a speed of 4 m/s for 3.2 seconds?
    5·1 answer
  • Assuming a mass of 0.04 g, what is the power exerted by the electrical forces on a fragment of fiber if the fragment has a veloc
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!