A particular plant species has numerous fruits and no visible seeds. Which of the following could it be?

An object is placed in a graduated cylinder and displaces 10 ml of water. The density of the object is 2 g/ml. What is the mass

ikadub [295]

Answer - 20g
$ρ = \frac{m}{V}$
$m = ρV$
$m = 2 \times 10$
$m = 20g$

5 0

2 years ago

What healthy, positive action can people take to reduce their weight gain??

S_A_V [24]

<span>I believe the answer is to regulate the content of processed foods.

hope this helps!</span>

3 0

3 years ago

A 2 m long rope having a mass of 26 grams is stretched with a tension of 50 N. It is set to periodic

Debora [2.8K]

(a) The amplitude of the wave is 3 cm.

(b) The speed of the wave is 19.6 m/s

(c) The angular frequency is 653.72 rad/s.

(d) The period of the wave is 0.0096 s.

(e) The wavelength of the wave is 0.392 m.

<h3>Speed of the wave</h3>

The speed of the wave is calculated as follows;

$v = \sqrt{\frac{T}{\mu} }$

where;

μ is mass per unit length = (0.26 kg)/(2 m) = 0.13 kg/m
T is tension

$v = \sqrt{\frac{50}{0.13} } \\\\v = 19.6 \ m/s$

<h3>Angular frequency</h3>

ω = v/r

ω = v/A

ω = 19.6/0.03

ω = 653.72 rad/s

<h3>Period of the wave</h3>

$T = \frac{2\pi }{\omega } \\\\T = \frac{2\pi }{653.72} \\\\T = 0.0096 \ s$

<h3>Wavelength</h3>

v = fλ

λ = v/f

λ = 19.6/50

λ = 0.392 m

Learn more about wavelength here: brainly.com/question/10728818

#SPJ1

3 0

1 year ago

A toy helium balloon is initially at a temperature of T = 24o C. Its initial volume is 0.0042 m3 (It is a 10 cm radius sphere).

Anettt [7]

Answer:

$T_{f} = 335.780\,K\,(62.630\,^{\textdegree}C)$

Explanation:

Let assume that air behaves ideally. The equation of state of ideal gases is:

$P\cdot V = n\cdot R_{u}\cdot T$

Where:

$P$ - Pressure, in kPa.

$V$ - Volume, in m³.

$n$ - Quantity of moles, in kmol.

$R_{u}$ - Ideal gas constant, in $\frac{kPa\cdot m^{3}}{kmol\cdot K}$ .

$T$ - Temperature, in K.

Since there is no changes in pressure or the quantity of moles, the following relationship between initial and final volumes and temperatures is built:

$\frac{V_{o}}{T_{o}} = \frac{V_{f}}{T_{f}}$

The final temperature is:

$T_{f} = \frac{V_{f}}{V_{o}}\cdot T_{o}$

$T_{f} = 1.13\cdot (297.15\,K)$

$T_{f} = 335.780\,K\,(62.630\,^{\textdegree}C)$

7 0

2 years ago

Read 2 more answers

A) An electron is moving east in a uniform electric field of 1.48 N/C directed to the west. At point A, the velocity of the elec

Marat540 [252]

Answer:A)3074m,3074.37m/s

B)12905.4m,19100.54m/s

Explanation:the formula for electric field =V/d

Where V=velocity of the particle,d=distance covered from the electric field source

A)E=V/d

1.48=4.55×10^5/d

d=4.55×10^5/1.48=3074m

Distance of B from centre of the field=3074+0.370=3074.370m

B)d=V/E=1.91×10^4/1.48

d=12905.4m

At point B

Distance=12905.4+0.370=12905.770

V=Ed=12905.770×1.48=19100.54m/s

4 0

2 years ago