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
sammy [17]
2 years ago
14

Một cần trục có trọng lượng Q = 50 kN cẩu vật nặng có trọng lượng P = 10 kN

Physics
2 answers:
lesantik [10]2 years ago
8 0

5

3373727227717177

Explanation:

yun hehew

balu736 [363]2 years ago
7 0

That Vietnam I don't know

about Vietnam

You might be interested in
A stone dropped from the top of a building reaches the ground with a velocity of 49ms¹. If the acceleration due to gravity is 9.
bezimeni [28]

Explanation:

Given:

v₀ = 0 m/s

v = 49 m/s

a = 9.8 m/s²

Find: t

v = at + v₀

49 m/s = (9.8 m/s²) t + 0 m/s

t = 5 s

6 0
2 years ago
Technician A says the manual lever position (MLP) switch is sometimes called a transmission range switch or a neutral safety swi
Phantasy [73]

Answer:

i think it is Technician a

3 0
3 years ago
What is the intensity of 60dB sound?​
polet [3.4K]

Answer:

The intensity of the sound in W/m² is 1 x 10⁻⁶ W/m².

Explanation:

Given;

intensity of the sound level, dB = 60 dB

The intensity of the sound in W/m² is calculated as;

dB = 10 Log[\frac{I}{I_o} ]\\\\

where;

I₀ is threshold of hearing = 1 x 10⁻¹² W/m²

I is intensity of the sound in W/m²

Substitute the given values and for I;

dB = 10 Log[\frac{I}{I_o} ]\\\\60 = 10 Log[\frac{I}{I_o} ]\\\\6 =  Log[\frac{I}{I_o} ]\\\\10^6 = \frac{I}{I_o} \\\\I = 10^6 \ \times \ I_o\\\\I = 10^6 \ \times \ 1^{-12} \ W/m^2 \\\\I = 1\ \times \ 10^{-6} \ W/m^2

Therefore, the intensity of the sound in W/m² is 1 x 10⁻⁶ W/m².

5 0
3 years ago
3. Si usted duplicara la amplitud de un M.A.S. ¿cómo cambiaría la frecuencia, velocidad máxima, la aceleración máxima y la energ
WITCHER [35]

Answer:

Explanation:

la frecuencia = ω/2π, nada cambio

v(max) = ωA → ω2Α = 2ωA  duplicara velocidad máxima

a(max) = ω²Α → ω²2Α = 2ω²Α duplicara la aceleración máxima

la energía total ½kA² → ½k(2Α)² = 4(½kA²) cuatro veces la energía

8 0
2 years ago
A negative test charge will accelerate toward regions of ________ electric potential and ________ electric potential energy.
dalvyx [7]

Answer: higher and lower

Explanation:

 charge in an electric field will experience a force in the direction of decreasing potential energy. Since the electric potential energy of a negative charge is equal to the charge times the electric potential the direction of decreasing electric potential energy is the direction of increasing electric potential.

5 0
3 years ago
Other questions:
  • A baseball is hit with a bat. The direction of the ball is completely reversed and its speed is doubled. If the actual contact w
    5·2 answers
  • For line graphs and bar graphs, the values measured by the _____ axis depend on the values measured by the horizontal axis.
    9·1 answer
  • A spring is laid horizontally on a table and a force of 62 N is required to stretch the spring 12 cm. The spring is then held ve
    15·1 answer
  • When using the magnification equation, a value greater than 1 as the solution for M indicates that the image ? is larger than th
    6·2 answers
  • A weather forecaster uses Doppler radar to predict the track of a storm near the town of hillville when the Doppler signal is he
    12·1 answer
  • A 70 kg human sprinter can accelerate from rest to 10 m/s in 3.0 s. During the same time interval, a 30 kg greyhound can go from
    15·1 answer
  • A ball has a mass of 0.25 kg and is moving to the right at 1.0 m/s. It hits a ball of mass 0.15 kg that is initially at rest. Af
    14·1 answer
  • Find your mass if a scale on earth reads 650 N when you stand on it.
    13·1 answer
  • How is sound created (at the particle level)?
    8·1 answer
  • Radio waves travel at the speed of light. How long would it take the Russians
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!