What term defines the specific amount of time required for half of a radioactive substance to become stable?

In a particular machine, there are 2 gears that interlock; One gear is larger in circumference than the other. The manufacturer

Ivahew [28]

this question is incomplete.here is complete question

In a particular machine, there are 2 gears that interlock; One gear is larger in circumference than the other. The manufacturer of the gears guarantees that each gear will last for at least 6,000,000,000 revolutions. Assuming that there is no slippage between the 2 gears and that when one gear rotates the other gear also rotates, the larger gear is guaranteed to last how many days longer than the smaller gear?

(1) The diameter of the larger gear is twice the diameter of smaller gear.

(2) The smaller gear revolves 600 times per minute.

Answer:

Number of days larger gear last longer than small gear=115.74 days

Explanation:

Given Data

Revolution=6,000,000,000 revolutions

diameter of larger gear is twice diameter of smaller gear

Smaller gear revolves=600 times per minute

Number of days larger gear last longer than small gear=?

Solution

$No:days=\frac{6,000,000,000}{24*60*60}*((1/300)-(1/600))\\ No:days=115.74days$

3 0

3 years ago

Find the net downward force on the tank's flat bottom, of area 1.60 m2 , exerted by the water and air inside the tank and the ai

Dovator [93]

Answer:

The net downward force on the tank is $1.85\times10^{5}\ N$

Explanation:

Given that,

Area = 1.60 m²

Suppose the design of a cylindrical, pressurized water tank for a future colony on Mars, where the acceleration due to gravity is 3.71 meters per second per second. The pressure at the surface of the water will be 150 K Pa , and the depth of the water will be 14.4 m . The pressure of the air in the building outside the tank will be 88.0 K Pa.

We need to calculate the net downward force on the tank

Using formula of formula

$F=(P+\rho\times g\times h-P_{out})A$

Where, P = pressure

g = gravity at mars

h = height

A = area

Put the value into the formula

$F=(150\times10^3+1.00\times10^3\times3.71\times14.4-88.0\times10^{3})\times1.60$

$F=1.85\times10^{5}\ N$

Hence, The net downward force on the tank is $1.85\times10^{5}\ N$

8 0

3 years ago

WILL MARK BRAINLIEST PLS HELP

KiRa [710]

Answer:

Our planet's rotation produces a force on all bodies moving relative to theEarth. Due to Earth's approximately spherical shape, this force is greatest at the poles and least at the Equator. The force, called the "Coriolis effect," causes the direction of winds and ocean currents to be deflected.

Hope this helps!

4 0

3 years ago

IDENTIFY WHAT IS BEING DESCRIBED IN EACH SENTENCE AND WRITE YOUR ANSWER ON THE BLANKS

qwelly [4]

1) digestive enzymes

2) skeletal system

3) The integumentary system

4) the cardiovascular system

5) secrete hormones

Hope this helps! Have a good day! ❤️

3 0

2 years ago

A 200-loop coil of cross sectional area 8.5 cm2 lies in the plane of the paper. Directed out of the plane of the paper is a magn

Maslowich

Explanation:

It is given that,

Number of turns, N = 200

Area of cross section, A = 8.5 cm²

Magnetic field is directed out of the paper and is, B = 0.06 T

The magnetic field is out of the paper decreases to 0.02 T in 12 milliseconds. We need to find the direction of current induced. The induced emf is given by :

$\epsilon=-N\dfrac{d\phi}{dt}$

Since, $\epsilon=IR$

I is the induced current

$I=-\dfrac{N}{R}\dfrac{d\phi}{dt}$

According to Lenz's law, the direction of induced current is such that it always opposes the change in current that causes it.

Here, the field is directed out of the plane of the paper, this gives the induced current in counterclockwise direction.

5 0

3 years ago