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Kamila [148]
3 years ago
10

A piano with a mass of 130 kg is lifted 10m above the ground in 5 s by a crane.

Physics
2 answers:
hammer [34]3 years ago
7 0
The 2548 watts should be the power that is used by the crane according to the formula
Sergio [31]3 years ago
6 0

<em>power = 2548 \: watt \\ solution \\ mass = 130 \: kg \\ distance = 10m \\ time = 5 \: sec \\ power =  \frac{w}{t}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  =  \frac{f \times d}{t}  \\  \:  \:  \:  \:  \:  \:  \:  \:  =  \:  \frac{m \times g \times d}{t}  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  =  \frac{130 \times 9.8  \times 10}{5}  \\  \:  \:  \:  \:  \:  \:  \:  \:  =  \frac{12740}{5}  \\  \:  \:  \:  \:  \:  = 2548 \: watt \\ hope \: it \: helps</em>

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While playing a scavenger hunt game, Anthony walks 48.0 m to the south and then walks 12.0 m to the west. What single straight-l
Alenkasestr [34]
As these are distances created by moving in a straight line, using a trigonometric analysis can solve the missing single straight-line displacement. Looking at the 48m and 12m movements as legs of a triangle, obtaining the hypotenuse using the pythagorean theorem will yield us the correct answer.
This is shown below:

c^2 = 48^2 + 12^2
c = sqrt(2304 + 144)
c = sqrt(2448)
c = 49.48 m

To obtain the angle at which Anthony walks 49.48, we obtain the arc tangent of (12/48). This is shown below:

arc tan (12/48) =14.04 degrees.

Therefore, Anthony could have walked 49.48 m towards the S 14.04 W direction.
4 0
3 years ago
A rock is thrown with a force of 500 N and an acceleration is 75 m/s^2. What is its mass?
artcher [175]

Answer:

We conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

Explanation:

Given

  • Force F = 500 N
  • Acceleration a = 75 m/s²

To determine

Mass m = ?

Important Tip:

  • The mass of a rock can be found using the formula F = ma

Using the formula

F = ma

where

  • F is the force (N)
  • m is the mass (kg)
  • a is the acceleration (m/s²)

now substituting F = 500, and a = 75 m/s² in the formula

F = ma

500 = m(75)

switch sides

m\left(75\right)=500

Divide both sides by 75

\frac{m\cdot \:75}{75}=\frac{500}{75}

simplify

m=\frac{20}{3}

m=6.7 kg

Therefore, we conclude that the mass of a rock with a force of 500 N and an acceleration of 75 m/s² is 6.7 kg.

Hence, option D is correct.

7 0
3 years ago
HEY CAN ANYONE ANSWER DIS QUESTION PLS!!!!!!!!
Valentin [98]
It’s very big and very small numbers
6 0
3 years ago
A bus accelerates 25 m/s" and the bus has a mass of 150kg. What is the force on the bus?
o-na [289]

Answer:

150 I would believe that it is the correct answer

4 0
3 years ago
The boiling point of a substance is _72 degree Celsius. This temperature will be equivalent to Kelvin scale is-------.
Vlada [557]

Answer:

345 K

Explanation:

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object.

Generally, it is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).

<u>Given the following data;</u>

  • Boiling point = 72°C

<em>To convert the temperature in degree Celsius to Kelvin, we would use the following mathematical expression;</em>

Kelvin = 273 + °C

Substituting into the formula, we have;

Kelvin = 273 + 72

<em>Kelvin = 345 K</em>

<em>Therefore, the temperature of 72°C will be equivalent to 345 K on the Kelvin scale.</em>

3 0
3 years ago
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