3 years ago

Helpp Plzz i’ll mark branliest

Physics

1 answer:

Dvinal [7]3 years ago

6 0

Answer:

The sloping line shows that the speed of the object is changing. The line slopes upward from left to right, this means the object is speeding up.

maybe..... ๏_๏

You might be interested in

What is the velocity (in m/s) of a 550 kg roller coaster cart at the bottom of the track if it started with 990,000 J of gravita

sesenic [268]

Answer:

60m/s

Explanation:

initial energy = final energy

g.p.e = k.e

k.e = 0.5 × mass × velocity²

g.p.e = 990000J as per Question

990000Nm = 0.5 × 550 × V²

V² = 3600

V = 60m/s

4 0

3 years ago

An expensive vacuum system can achieve a pressure as low as 1.00 × 10 − 8 N / m 2 at 19.5 °C . How many atoms are there in a cub

Stels [109]

Answer:

2475042

Explanation:

P = Pressure = [/tex]1\times 10^{-8}\ N/m^2[/tex]

V = Volume = 1 cm³

T = Temperature = 19.5 °C

R = Gas constant = 8.341 J/mol K

$N_A$ = Avogadro's number = $6.022\times 10^{23}$

n = Amount of substance

From ideal gas law we have

$PV=nRT\\\Rightarrow n=\frac{PV}{RT}\\\Rightarrow n=\frac{1\times 10^{-8}\times 1\times 10^{-6}}{8.314(273.15+19.5)}\\\Rightarrow n=4.11\times 10^{-18}$

Number of atoms is given by

$n\times N_A\\ =4.11\times 10^{-18}\times 6.022\times 10^{23}\\ =2475042\ atoms$

The number of atoms in this vacuum is 2475042

8 0

3 years ago

Give the SI unit. For physics

IrinaVladis [17]

Answer:

metre (m) - unit of length

kilograms (kg) - unit of mass

second (s) - unit of time

ampere (A) - unit of electrical current

kelvin (K) - unit of temperature

mole (mol) - unit of the amount of substance

Explanation:

6 0

3 years ago

For this problem, imagine that you are on a ship that is oscillating up and down on a rough sea. Assume for simplicity that this

ikadub [295]

Answer:

no idea

Explanation:

7 0

4 years ago

Please help I have no idea

DochEvi [55]

Answer:

Explanation:

bbbbbbbbbbbbbbvgh c tyvftj xf

3 0

3 years ago