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
RideAnS [48]
2 years ago
8

Which statement is true of forces?

Physics
1 answer:
jasenka [17]2 years ago
8 0
FORCES HAVE  STRENGTH AND DIRECTION 
You might be interested in
The derived unit for density are g/cm3.<br><br> True<br> False
anzhelika [568]
True, the measurement shown is a derived unit.
6 0
2 years ago
What is the explanation for how a modern transmission electron microscope (TEM) can achieve a resolution of about 0.2 nanometers
IgorC [24]

Answer:

Explanation:

A simple light microscope uses light for imaging of objects where as a transmission electron microscope uses a monochromatic beam of electrons.

This beam is passed by a magnetic field which is very strong and thus act as a lens.

Its resolution of very high which is about 0.2 nanometers because of the separation between two atoms.

Because of this reason its resolution is about 1000 times greater than light microscope.

3 0
2 years ago
Why is the weight of the ruler not include in the calculation of moment?​
Feliz [49]

Answer:

Since the distance between the pivot and its weight is zero, the moment of its weight about the pivot (= weight × 0) is zero. Hence, the weight of the ruler can be ignored.

Hope this helps:)

3 0
3 years ago
Longer wavelengths of light, such as _______, have ________ energy than shorter wavelengths, such as _________
Ilya [14]

Answer:

Micro and radio waves.

Lower energy.

Gamma rays.

Explanation:

The electromagnetic spectrum is the range of frequencies of electromagnetic radiation and their respective wavelengths.

Ionising radiation os defined as the energy required of photons of a wave to ionize atoms, causing chemical reactions.

The energy of the wave depends on both the amplitude and the frequency. If the energy of each wavelength is a discrete packet of energy, a high-frequency wave will deliver more of these packets per unit time than a low-frequency wave. In summary, the longer the wavelength, the lower the energy to ionise.

The velocity of a wave is directly proportional to the frequency of that wave.

c = f * lambda

Where,

c = velocity of the wave

f = frequency of the wave = 1/time

Lambda = wavelength.

From the above expression, the longer the wavelength, lambda the shorter the frequency.

Examples of waves with longer wavelengths are, micro and radio waves, while radiations with shorter wavelengths like gamma rays.

8 0
2 years ago
Which statement best describes a device that has a high energy efficiency? Its ratio of energy absorbed to energy released is hi
Stels [109]

Answer:

It wastes little energy

Explanation:

  • The efficiency of a machine refers to the ratio of work output to the work input as a percentage.
  • The efficiency of most machines is less than 100% because some work is lost  due to friction and heat.
  • Therefore, a machine with high efficiency has less wastage of energy due to factors such as friction of the moving parts. Conversely, low efficiency means there is more wastage of energy.
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the wavelength of an earthquake wave if it has a speed of 12 km/s and a frequency of 15 Hz
    7·1 answer
  • Which of the following statement best define tides?
    9·2 answers
  • Two golf balls are thrown with the same speed off the top of a large bridge at the same time. ball a is thrown straight downward
    8·1 answer
  • Which statement describes how rays behave when they travel through media during reflection and refraction?
    8·2 answers
  • Two particles having charges of 0.440 nC and 11.0 nC are separated by a distance of 1.80 m . 1) At what point along the line con
    5·1 answer
  • A(n)............ exerts a force on a system. It is symbolised as a subscript to the force.
    10·2 answers
  • A metal ring 4.30 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpend
    14·1 answer
  • When Maria rubbed her solid graphite pencil against paper, it easily left a clear streak on the paper. Which model could represe
    13·1 answer
  • Lamar writes several equations trying to better understand potential energy. What conclusion is best supported by lamar's worm?
    5·1 answer
  • If the Earth got closer to the Sun, how would the gravity between the Sun and Earth change?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!