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3 years ago

What does a forensic anthropologist do?

1 answer:

8 0

A Forensic Anthropologist studies skeletal remains and gather information used to determine the individual's age at death, sex and physical condition.

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A note on a piano vibrates 262 time per second. What is the period of the wave

Alexxandr [17]

Answer: it is period 93

Explanation:

7 0

4 years ago

The sports car has a mass of 1.5 Mg Mg and a center of mass at G. Determine the shortest time it takes for it to reach a speed o

mezya [45]

Answer:

$\Delta t = 17.041\,s$

Explanation:

The figure of the problem is included below as attachment. The equations of equilibrium are presented below:

$\Sigma F_{x} = -\mu\cdot N_{1} = m\cdot a$

$\Sigma F_{y} = N_{1} + N_{2} - m\cdot g = 0$

$\Sigma M_{G} = N_{1}\cdot x_{1} - N_{2}\cdot x_{2} - \mu\cdot N_{1}\cdot y_{1} = 0$

The system of equations are:

$-0.2\cdot N_{1} = (1500\,kg)\cdot a$

$N_{1} + N_{2} - (1500\,kg)\cdot \left(9.807\,\frac{m}{s^{2}}\right) = 0$

$N_{1} \cdot [(0.75\,m)-0.2\cdot (0.35\,m)] - N_{2}\cdot (1.25\,m) = 0$

The solution of the system is:

$N_{1} = 9780.918\,N$ , $N_{2} = 4929.582\,N$ and $a = - 1.304\,\frac{m}{s^{2}}$

The shortest time to reach a speed of 80 km/h is:

$\Delta t = \frac{22.222\,\frac{m}{s}-0\,\frac{m}{s}}{1.304\,\frac{m}{s^{2}} }$

$\Delta t = 17.041\,s$

7 0

4 years ago

Calculate the net force on your 0.50-cm2 eardrum that air exerts on the inside and the outside after you drive from Denver, Colo

tekilochka [14]

Answer:

1.0563408 N

Explanation:

$\rho$ = Density of air = 0.8 kg/m³

g = Acceleration due to gravity = 9.81 m/s²

h = Altitude

A = Area = 0.5 cm²

Pressure

$p=\rho gh\\\Rightarrow p=0.8\times 9.81\times (4301-1609)\\\Rightarrow p=21126.816\ Pa$

Pressure

$p=\frac{F}{A}\\\Rightarrow F=pa\\\Rightarrow F=21126.816\times 0.5\times 10^{-4}\\\Rightarrow F=1.0563408\ N$

The net force on your ear is 1.0563408 N

6 0

3 years ago

Two waves with an amplitude of 54 units and 64 units arrive at a point in a medium simultaneously. If the two waves are in phase

igomit [66]

The amplitude of the wave is equal to the sum of the amplitudes of the two waves if the phase of the two waves is the same.
54+64=118 <span>units

</span>

3 0

3 years ago

Riley is cleaning his room(a once a year activity) and pulls the Hoover with a force of 8 N a total distance of 20 metres. How m

Radda [10]

Answer:

160J

Explanation:

Given force = 8N and total distance = 20 meters

Workdone = force x distance

= 8 x 20

= 160J

Therefore, workdone by Riley in pulling the hoover is 160J

7 0

3 years ago