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
Brut [27]
3 years ago
8

Su una strada rettilinea ci sono due semafori che distano 98 m e che diventano verdi contemporaneamente. Dal primo semaforo part

e un’auto che sì muove alla velocità costante di 43 km/h; dall’altro semaforo parte, nel verso opposto, un camper che viaggia alla velocità costante di 36 km/h.
Determina quanto tempo dopo l'accensione del verde i due automezzi sì affiancano e quanta strada ha percorso l'automobile in quel momento.
Physics
1 answer:
pantera1 [17]3 years ago
3 0

Answer:

Le due rette rappresentano le leggi del moto di due punti

materiali (per esempio due macchine) che si muovono di moto

rettilineo uniforme. La retta meno pendente (velocità più bassa)

è riferita alla macchina che parte da una posizione iniziale più

avanti rispetto alla seconda macchina. Però, la seconda

macchina, avendo una velocità maggiore della prima (retta più

pendente), nonostante parta più indietro rispetto alla prima, dopo

un certo tempo la raggiungerà. Pertanto, il punto P, intersezione

delle due rette, rappresenta la situazione fisica in cui la seconda

macchina raggiunge la prima. In particolare, le coordinate del

punto P (tempo e spazio), rappresentano l’istante e la posizione

in cui la seconda macchina raggiunge la prima.

You might be interested in
9. A 227 kg object is moved a distance of 2.4 m forward by a force. If 686 J of work is done on the object, what is the object’s
Korolek [52]

<em>1</em><em>.</em><em>259ms^2</em>

Explanation:

since, WORK DONE = FORCE*DISTANCE

AND, FORCE=MASS*ACCELERATION

SO, THE WORK DONE BECOMES=MASS*ACCELERATION*DISTANCE

ACCELERATION=WORK/(MASS*DISTANCE)

AND, WORK=686J

MASS=227kg

DISTANCE=2.4m

THEREFORE, ACCELERATION=686/(227*2.4)

=686/544.8

=1.259ms^2

4 0
3 years ago
The velocity of money is a the same thing as the long-term growth rate of the money supply. b the money supply divided by nomina
tia_tia [17]

b the money supply divided by nominal GDP

Explanation:

The velocity of money is nothing but the ratio of GDP and money supply. In other words, velocity of money also tells us the rate at which money is being exchanged in a country. The constant velocity says that the growth rate in the economy is zero. Velocity of money depends on the rate at which money is spent for finished goods and services per unit time. It is more when spending of money is more and it decreases when people spend less money. The total amount of money that is in circulation or that exists in a country is know as money supply.

3 0
4 years ago
Imagine a star very similar to our own Sun in both size and mass. This star moves very slightly back and forth in the sky once e
Inessa05 [86]

Answer:

(c) The planet must have a mass about the same as the mass of Jupiter,

(d) The planet must be closer to the star than Earth is to the Sun.

Explanation:

Astrometry is the ideal method to detect high-mass planets that are close to their star. That is because the gravitational effect that it will have the planet over its host star will be greater. This effect can be seen as a wobble in the star as a consequence of how they orbit a common center of mass¹. The center of mass will be closer to the most massive object, So, in the case of an extrasolar planet with masses like Jupiter (Jovian), this point will be a little bit farther from the star, making the wobble more notable than in a system with a low-mass planet.          

Key terms:

Astrometry: study of the position of the stars over time in the sky.

¹Center of mass: a geometrical point in which the mass from a whole system is summed.

6 0
3 years ago
Explain how there can be more heat energy in an iceberg than in a pot of boiling water
insens350 [35]
The tension of cold icebergs rubbing creates heat and it can also be how large the quantity is
3 0
4 years ago
Read 2 more answers
A spherical balloon has a radius of 6.95m and is filled with helium. The density of helium is 0.179 kg/m3, and the density of ai
klio [65]

Answer:

602.27 kg

Explanation:

The computation of the largest mass of cargo the balloon can lift is shown below:-

Volume of helium inside the ballon= (4 ÷ 3) × π × r^3

= (4 ÷ 3) × 3.14 × 6.953

= 1406.19 m3

Mass the balloon can carry = volume × (density of air-density of helium)

= 1406.19 × (1.29-0.179)

= 1562.27 kg

Mass of cargo it can carry = Mass it can carry - Mass of structure

= 1562.27 - 960

= 602.27 kg

6 0
3 years ago
Other questions:
  • Take another look at lines 2 and 3. Suppose you use distance and time between any pair of neighboring dots to calculate speed:
    7·2 answers
  • An alternator consists of a coil of area A with N turns that rotates in a uniform field B around a diameter perpendicular to the
    5·1 answer
  • Using a skillet on the stove to cook scrambled eggs is an example of which heat transfer?
    9·2 answers
  • Which of the following correctly describes the inflammatory reaction?
    12·1 answer
  • A rock is thrown off a cliff at an angle of 57° above the horizontal. the cliff is 135 m high. the initial speed of the rock is
    13·1 answer
  • Astronomers today use the concept proposed by Christian Doppler and Edwin Hubble to determine the motion of stars and galaxies.
    13·1 answer
  • What is the ability to complete extended periods of physical activity?
    11·2 answers
  • Two students spotted some white, eyeless crayfish in the darkness.
    13·1 answer
  • A block of mass 0.244 kg is placed on top of a light, vertical spring of force constant 4 975 N/m and pushed downward so that th
    6·1 answer
  • What are some forces and motion?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!