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
Oliga [24]
3 years ago
9

____ is the detection of halo objects like brown dwarfs when their gravitational fields concentrate the light of distant sources

(like galaxies).
Physics
1 answer:
maksim [4K]3 years ago
7 0

Answer:

Microlensing.

Explanation:

This techniques is called Microlensing.

Microlensing is a method of gravitational lensing where light from a backdrop point of origin is curved to develop distorted, numerous and/or lightened images by the gravity field of a foreground lens.

This method is very effective in discovering planets that are far-far from earth.It is actually an astronomical effect that was predicted by Albert Einstein's general theory of relativity.

You might be interested in
What is the definition of work in Physics?
Degger [83]

Answer:

the mental and physical activities carried out by using energy are generally termed as work

3 0
3 years ago
What quantity of heat is required to change 20g of ice at -25°c to steam at 120°c
Oksana_A [137]

Answer: 5289 joules

Explanation:

The quantity of Heat Energy (Q) required to heat a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Since, Mass of ice = 20 g

C is not provided (Recall that the specific heat capacity of ice is 2.010J/g°C)

Φ = (Final temperature - Initial temperature)

(120°C - (-25°C) =

120°C + 25°C = 145°C

Thus, Q = 20g x 2.010J/g°C x 145°C

Q= 5829J

Thus, 5829Joules of heat energy is required to heat ice

6 0
3 years ago
What Coulombs discovered almost 300<br> years ago
tamaranim1 [39]

Answer:

ummm hehe this is my time to shine

Explanation:

  MERICIA!!!!!!!!!!!!!!!!!!!!!!!

5 0
3 years ago
Read 2 more answers
A 10v battery is connected in series with 2 resistors. R1 is 1 ohm and R2 is 4 ohms. What is the current that goes across R1?
Digiron [165]

Answer:

Current in circuit = 2 amp

Explanation:

Given:

Voltage of battery = 10 V

First Resistance R1 = 1 ohm

Second Resistance R2 = 4 ohm

Resistor connected in series

Find:

Current in circuit

Computation;

Resistor connected in series

So,

Total resistance R = First Resistance R1 + Second Resistance R2

Total resistance R = 1 ohm + 4 ohm

Total resistance R = 5 ohm

Current in circuit = V / R

Current in circuit = 10 / 5

Current in circuit = 2 amp

7 0
2 years ago
Weight is influenced by which of the following
nignag [31]

Out of the given options, weight is influenced by mass and gravity

Answer: Option A

<u>Explanation: </u>

The object's mass is defined as the quantity of a matter with which the object is formed. It can change its state of matter but the quantity will remain the same. However, the weight is defined as how much force gravity exerts on the object's mass to pull it.

The mass is always same irrespective the location but the weight may vary from one place to the other while talking for the bigger picture. For example, the object's weight may be 60 kg on Earth but when it is measured on the moon, it will be lesser.

The weight of an object generally has nothing doing with the volume and it doesn't depend solely on the gravitational pull. The mass plays a crucial role.

                                  W=F=m \times g

6 0
3 years ago
Other questions:
  • A student is helping her teacher move a 9.5 kg box of books. what net sideways force must she exert on the box to slide it acros
    9·1 answer
  • Calculate the period of a wave whose frequency is 10 Hz and whose wavelength is 1 cm give your answer in decimal form
    9·1 answer
  • Two men, Joel and Jerry, push against a car that has stalled, trying unsuccessfully to get it moving. Jerry stops after 10 min,
    12·2 answers
  • #2 Most of Earth's weather takes place in the O troposphere O stratosphere O mesosphere thermosphere​
    15·1 answer
  • Rafael is driving his car at 26 m/s. What is the shortest distance in which he can brake and stop if the coefficient of static f
    15·1 answer
  • Eroded debris that is dropped at the glaciers farthest extent when ice melts at the front of the glacier as seen in the image is
    13·1 answer
  • Every rock that you find must be or have at one time been a/an​
    15·1 answer
  • Consider the common measurement speed = 55 mph. What is the magnitude quantity?
    10·1 answer
  • two forces are acting on a boat. one force of 400N is due to current in the river, acting downstream. the other force due to the
    5·1 answer
  • An installation consists of a 30-kVA, 3-phase transformer, a 480-volt primary, and a 240-volt secondary. Calculate the largest s
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!