All categories

3 years ago

12

Physics

1 answer:

Svet_ta [14]3 years ago

6 0

Answer:

See below ~

Explanation:

An object will sink in water when its density is greater than that of water, which is 1 g/cm³.

Volume of the box is <u>1331 cm³</u>. (11³)

Maximum mass of sand will be 1331 g. [because 1331/1331 = 1 g/cm³]

Volume of sand = Mass of sand / Density of sand
Volume (sand) = 1331/3.5
Volume (sand) = 380.29 cm³

If the volume of sand is <u>greater than 380.29 cm³</u>, the box will sink in water.

You might be interested in

If you see a rainbow near the time of sunset, where in the sky will the rainbow be?

Igoryamba

Closest to the sun f thats a choice or closest to the atmoshpere

8 0

4 years ago

The voltage V in a circuit that satisfies the law V = IR is slowly dropping as the battery wears out. At the same time, the resi

Anastasy [175]

Answer:

$-0.5\times 10^{-4} A/s$

Explanation:

We are given that

$\frac{dV}{dt}=-0.01 V/s$

R=600 ohms

I=0.04 A

$\frac{dR}{dt}=0.5ohm/s$

$V=IR$

$\frac{dV}{dt}=\frac{\partial V}{dI}\frac{dI}{dt}+\frac{\partial V}{dR}\frac{dR}{dt}$

$\frac{dV}{dt}=R\frac{dI}{dt}+I\frac{dR}{dt}$

Substitute the values

$-0.01=600\times \frac{dI}{dt}+0.04\times 0.5$

$-0.01-0.04\times 0.5=600\frac{dI}{dt}$

$-0.03=600\frac{dI}{dt}$

$\frac{dI}{dt}=\frac{-0.03}{600}=-0.5\times 10^{-4}A/s$

5 0

4 years ago

Which of the following is not a natural resource of light

marta [7]

Answer: Oil lamps are NOT a natural resource of light.

Explanation: Oil lamps have to be lit and do not give off light themselves. You have to make them and light them for them to give light.

8 0

3 years ago

an unbalanced force of 965 N causes an object to accelerate at 54.5 m/s^2. what is the mass of the object

Andru [333]

Answer:

$F=ma \\ 965 = m(54.5) \\ m = \frac{965}{54.5} \\ m = 17.7kg$

8 0

2 years ago

The radius of the circle traced out by the second hand on a clock is 6.00 cm. In a time t the tip of the second hand moves throu

quester [9]

Answer:

30.29 s

Explanation:

We are given that

Radius=r=6 cm

Length of an arc=l=19 cm

We have to find the value of t in seconds.

$\theta=\frac{l}{r}$

Substitute the values then we get

$\theta=\frac{19}{6}=3.17 rad$

We know that

1 minute=60 seconds

In 60 seconds ,second hand makes an angle= $2\pi$ radian

$2\pi$ radian made by second had in 60 sec.

1 radian made by second hand in $\frac{60}{2\pi}$ sec

3.17 rad made by second hand in $\frac{60}{2\pi}\times 3.17=\frac{60}{2\times 3.14}\times 3.17=30.29 s$

Hence, the value of t =30.29 s

5 0

4 years ago