What is the kinetic energy of a 1500 kg object that is moving at a speed of 71 meters per second

Please help due today

Leya [2.2K]

Answer:

8

Explanation:

(8√2)² = x² + x²

8² × √2² = 2x²

64 × 2 = 2x²

128 = 2x²

64 = x²

x = 8

give me brainliest please

5 0

3 years ago

A light-year is _______________

kozerog [31]

The correct answer would be A "<span>A light-year is the distance light travels in a year.

This is considered a unit of distance connected to the distance that light can travel in one year. It is proved that light travels at 300,000 km per second so, in 1 year, it might travel 10 trillion km.

</span>

3 0

3 years ago

Read 2 more answers

1) An ac source of period T and maximum voltage V is connected to a single unknown ideal element that is either a resistor, and

Lady_Fox [76]

Answer: Capacitor

Explanation:

Given the following ;

At time, t = T/4 ; I = 0

At time, t = T/2 ; I = - Imax

Where T = period

We can confirm what the unknown element is by using the relation, such that the parameters satisfy the stated condition ;

Recall;

I = Iosin(wt + π/2) [for CAPACITOR]

w = 2π/T

At t = T/4

I = Iosin(2π/T(T/4) + π/2)

I = Iosin(π/2 + π/2)

I = Iosin(0)

I = 0

At t = T/2

I = Iosin(2π/T(T/2) + π/2)

I = Iosin(π + π/2)

I = Iosin(0)

I = Iosin(3π/2)

I = Iosin(540/2)

I = Iosin(270)

I = -Io

Note : Io = Imax

Both conditions are met, Hence, the unknown element is a CAPACITOR.

6 0

3 years ago

Why is there an error between the calculated values of r and the nominal value of r?.

Elan Coil [88]

The nominal value is based on experimental results whereas this model is likely based on the ideal gas law, which real gasses don't follow precisely.

<h3>What is nominal value?</h3>

In economics, nominal values guide the unadjusted rate or current price, without taking inflation or other elements into account as opposed to real discounts, where adjustments are made for available price level changes over the period.

The nominal price of a guarantee is its stated value, its saving price, or its unadjusted price, without taking into account inflation and other elements. The real value of a guarantee is its market value or a modified price that accounts for price level transitions that have occurred over a period.

In economics, the nominal significance is the unadjusted value of an asset without carrying into account deductions and compensations, such as expenses, taxes, and inflation. It is the difference between the real value of an asset, which contemplates deductions and premiums.

To learn more about nominal value, refer to:

brainly.com/question/3837338

#SPJ4

6 0

1 year ago

A block with mass m = 0.200 kg is placed against a compressed spring at the bottom of a ramp that is at an angle of 53.0∘ above

Murljashka [212]

Answer:

$0.566\; \rm N$ (assuming that while the block is moving, the friction on the block is constant.)

Explanation:

The mechanical energy of a system is the sum of its:

elastic potential energy,
gravitational potential energy, and
kinetic energy.

Friction does work on the block as the block moves up the ramp. The amount of energy that the block-string system has lost would be equal in size to the work that friction has done on the block. The size of the friction on the block could thus be computed.

Before this block was released, the block-spring system has no kinetic energy because there was no movement. Assume that the system has no gravitational potential energy at that moment, either. The only type of mechanical energy in this system at that moment would be elastic potential energy: $8\; \rm J$ according to the question.

The question states that the ramp is $53.0^\circ$ above horizontal. Therefore, after the block has traveled $3.00\; \rm m$ (along the ramp,) the height of this block would have increased by $\Delta h = 3.00\; \rm \sin\left(53^\circ\right) \approx 2.39591\; \rm m$ . Calculate the corresponding gain in gravitational potential energy:

$\begin{aligned}& m \cdot g \cdot \Delta h\\ &\approx 0.200\; \rm kg& \\\ &\quad\times 9.81\; \rm N \cdot kg^{-1} \\ &\quad \times 2.39591\; \rm m \\ &\approx 4.70077\; \rm J\end{aligned}$ .

On the other hand, the question states that the speed of the block ( $m = 0.200\; \rm kg$ ) at that moment is $v = 4.00\; \rm m \cdot s^{-1}$ . Calculate the corresponding kinetic energy:

$\begin{aligned}& \frac{1}{2}\, m \cdot v^{2} = 1.6\; \rm J \end{aligned}$ .

Because the block was already released, there should be no elastic potential energy in the spring.

Hence, the mechanical of the block-spring system would be approximately $4.70077\; \rm J+ 1.6\; \rm J \approx 6.30077\; \rm J$ .

Approximate the amount of mechanical energy that is lost:

$8\; \rm J - 6.30077\; \rm J \approx 1.69923\; \rm J$ .

In other words, when applied over $3\; \rm m$ , the friction on this block would do approximately $1.69923\; \rm J$ of work. Approximate the size of that friction:

$\begin{aligned}F &= \frac{W}{s} \\ &\approx \frac{1.69923\; \rm J}{3.00\; \rm m}\approx 0.566\; \rm N\end{aligned}$ .

3 0

3 years ago

What is the kinetic energy of a 1500 kg object that is moving at a speed of 71 meters per second​

What is the kinetic energy of a 1500 kg object that is moving at a speed of 71 meters per second