When the speed of the bottle is 2m/s

A 92-kg receiver running at 8 m/s catches a pass across the middle and is immediately brought to a stop during a collision with

sammy [17]

Answer: $1200\ N$

Explanation:

Given

Mass of receiver $m=92\ kg$

Running at a speed of $v=8\ m/s$

time taken to stop $t=0.6\ s$

We know, impulse imparted is given by

$\Rightarrow F\cdot dt=m\Delta v\\\Rightarrow F(0.6)=90(8-0)\\\\\Rightarrow F=\dfrac{90\times 8}{0.6}\\\\\Rightarrow F=1200\ N$

Thus, 1200 N is needed to stop the receiver.

7 0

3 years ago

Identify the phyla of the organisms on the basis of following distinct characteristics:

MrRissso [65]

Answer:

Phylum Annelida commonly referred as segmented worms possess long , cylindrical and segmented body .

Phylum Aschelminthes commonly referred as round worms possess long , cylindrical , unsegmented body and show sexual dimorphism .

Phylum Echinodermata which includes star fish have tube feet as locomotory organ .

Phylum Porifera commonly referred as pore bearing animals and are diploplastic which includes euspongia etc.

3 0

3 years ago

A large piece of jewelry has a mass of 132.6 g. a graduated cylinder initially contains 48.6 ml water. when the jewelry is subme

Lerok [7]

The density of the substance is 10.5 g/cm³.

The jewelry is made out of Silver.

Density ρ is defined as the ratio of mass m of the substance to its volume V. The cylinder contains a volume V₁ of water and when the jewelry is immersed in it, the total volume of water and the jewelry is found to be V₂.

The volume V of the jewelry is given by,

$V=V_2 -V_1$

Substitute 48.6 ml for V₁ and 61.2 ml for V₂.

$V=V_2 -V_1\\ =61.2 ml -48.6 ml\\ =12.6 ml$

calculate the density ρ of the jewelry using the expression,

$\rho =\frac{m}{V}$

Substitute 132.6 g for m and 12.6 ml for V.

$\rho =\frac{m}{V}\\ =\frac{132.6 g}{12.6 ml} \\ =10.5 g/ml$

Since $1 ml=1 cm^3$ ,

The density of the jewelry is 10.5 g/cm³.

From standard tables, it can be seen that the substance used to make the jewelry is silver, which has a density 10.5 g/cm³.

4 0

3 years ago

An object travels in a circular path of radius 5.0 meters at a uniform speed of 10. m/s. What is the magnitude of the object's a

vladimir1956 [14]

I think F= mv²/r
And F=ma
So, ma = mv²/r
a = v²/r
a = 100/5
a = 20 m/s

8 0

4 years ago

Read 2 more answers

In Young’s double-slit experiment using monochromatic light, the interference pattern consists of a central _____.

NNADVOKAT [17]

Answer:

In Young’s double-slit experiment using monochromatic light, the interference pattern consists of a central MAXIMUM.

Explanation:

In Young's double slit method of experiment we know that on the screen we have light of monochromatic source.

Due to this double slit system when light reaches to the screen there exist a finite path difference on the screen and which will create phase difference between two light reaches on the screen

It is given as

$\Delta \phi = \frac{2\pi}{\lambda}$ (Path difference)

so here if path difference is zero due to two slits at the center of the screen

Then in that case

$\Delta \phi = \frac{2\pi}{\lambda}(0) = 0$

so we will have maximum intensity at the center of the screen when light will reach at the center of the screen.

4 0

4 years ago