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2 years ago

How does density impact the hydrosphere and atmosphere?

2 answers:

6 0

Evaporated water from the hydrosphere gets stored in the atmosphere, which later releases the water back to the surface of the Earth in the form of precipitation. Water evaporates in warm areas, and the water vapor rises up into the atmosphere.

Scilla [17]2 years ago

4 0

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A 72 kg skydiver is descending on a parachute. His speed is still increasing at 1.2 m/s2. What are the magnitude and direction o

frozen [14]

Answer:

86.4 N downward

Explanation:

Force: This can be defined as the product of mass and acceleration of a body.

The S.I unit of Force is Newton(N).

The Expression of force is given as,

F = ma ................ Equation 1

Where F = force of the parachute harness, m = mass of the skydiver, a = acceleration of the skydiver.

Given: m = 72 kg, a = 1.2 m/s²

Substitute into equation 1

F = 72(1.2)

F = 86.4 N down ward.

Hence the force on the parachute harness = 86.4 N downward

8 0

2 years ago

An air gun fires 2 gram pellets at 60 m/s at a 45 gram golfball initially at rest. The pellets rebound at a speed 40 m/s and are

snow_lady [41]

Answer:

0.16 kgm/s

Explanation:

$m_1$ = Mass of pellet = 2 g

$m_2$ = Mass of golf ball = 45 g

$u_1$ = Initial Velocity of pellet = 60 m/s

$u_2$ = Initial Velocity of golf ball = 0 m/s

$v_1$ = Final Velocity of pellet = 40 m/s

$v_2$ = Final Velocity of golf ball

In this system the linear momentum is conserved

$m_1u_1+m_2u_2=m_1v_1+m_2v_2\\\Rightarrow m_2v_2=m_1u_1+m_2u_2-m_1v_1\\\Rightarrow m_2v_2=0.002\times 60+0-0.002\times 40\\\Rightarrow m_2v_2=0.04$

As the golf ball is being shot 4 times every second the momentum delivered to the golf ball each second is $4\times 0.04=0.16\ kgm/s$

8 0

2 years ago

What is the period of oscillation of a mass 40kg on a spring with constant k=10N/m?

iVinArrow [24]

The period of oscillation of the system is 12.56 s

Explanation:

The period of oscillation of a spring-mass system is given by

$T=2\pi \sqrt{\frac{m}{k}}$

where

m is the mass attached to the spring

k is the spring constant

For the system in this problem, we have

m = 40 kg

k = 10 N/m

Substituting into the equation, we find

$T=2\pi \sqrt{\frac{40}{10}}=12.56 s$

#LearnwithBrainly

7 0

2 years ago

Two trucks have the same velocity but different masses. Truck 1 has a mass of 200kg and truck 2 has a mass of 500kg . Which truc

Readme [11.4K]

Your answer would be Truck 2.

8 0

2 years ago

Tres personas, A, B, C, jalan una caja con ayuda de cuerdas cuya masa es despreciable. Si la persona A aplica −3 en dirección ho

Yuri [45]

Answer:

El valor de la fuerza que debe ejercer la persona C debe ser de -2 para que la caja esté en equilibrio físico.

Explanation:

Si la caja debe hallarse en equilibrio físico, entonces se debe satisfacer la siguiente ecuación:

$F_{A} + F_{B} + F_{C} = 0$ (1)

Si sabemos que $F_{A} = -3$ y $F_{B} = 5$ , entonces el valor de la fuerza que debe ejercer la persona C debe ser:

$F_{C} = -F_{A}-F_{B}$

$F_{C} = -(-3)-5$

$F_{C} = -2$

El valor de la fuerza que debe ejercer la persona C debe ser de -2 para que la caja esté en equilibrio físico.

3 0

2 years ago