Which diagram best shows the field lines around two bar magnets that repel each other?

The cells lie odjacent to the sieve tubes

nignag [31]

Answer:

<h2>Almost always adjacent to nucleus containing companion cells, which have been produced as sister cells with the sieve elements from the same mother cell. </h2>

4 0

3 years ago

DOUBLE POINTS!!!!

Nataly_w [17]

Explanation:

C.

Object A will require more force to be set in motion but will travel faster than object B.

2. true

7 0

2 years ago

What is the speed of an electron traveling 32 cm in 2 ns?

abruzzese [7]

Answer:

Speed, $v=1.6\times 10^8\ m/s$

Explanation:

Given that,

Distance covered by the electron, d = 32 cm = 0.32 m

Time, t = 2 ns

We need to find the speed of an electron. Speed is equal to distance covered divided by time. So,

$v=\dfrac{0.32}{2\times 10^{-9}}\\\\v=1.6\times 10^8\ m/s$

So, the speed of the electron is $1.6\times 10^8\ m/s$ .

6 0

3 years ago

A rigid tank whose volume is unknown is divided into two parts by a partition. One side of the tank contains an ideal gas at 935

a_sh-v [17]

Answer:

2805 °C

Explanation:

If the gas in the tank behaves as ideal gas at the start and end of the process. We can use the following equation:

$P=RTn/V$

The key issue is identify the quantities (P,T, V, n) in the initial and final state, particularly the quantities that change.

In the initial situation the gas have an initial volume $V_{i}$ , temperature $T_{i}$ , and pressure $P$ ,.

And in the final situation the gas have different volume $V_{f}$ and temeperature $T_{f}$ , the same pressure $P$ ,, and the same number of moles $n$ ,.

We can write the gas ideal equation for each state:

$P=RT_{i}n/V_{i}$ and $P=RT_{f}n/V_{f}$ , as the pressure are equals in both states we can write

$RT_{i}n/V_{i} = RT_{f}n/V_{f}$

solving for $T_{f}$

$T_{f} = T_{i}/V_{i} * V_{f}$ (*)

We know $T_{i}$ = 935 °C, and that the $V_{f}$ (the complete volume of the tank) is the initial volume $V_{i}$ plus the part initially without gas which has a volume twice the size of the initial volume (read in the statement: the other side has a volume twice the size of the part containing the gas). So the final volume $V_{f}= V_{i} + 2V_{i}=3V_{i}$

Replacing in (*)

$T_{f} = 935/V_{i} * 3V_{i} = 935*3= 2805$

7 0

2 years ago

Suppose earth did not rotate.How would conditions and life on earth be different

ki77a [65]

If the earth did not rotate, one half of the earth would be dark and the other side of the Earth would be light. The bright side would be too hot and the other side would be too cold. Also if the Earth did not rotate, then the two poles and the equator would be easily effected.

3 0

3 years ago

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