What is net force

Two forces P and Q act on an object of mass 11.0 kg with Q being the larger of the two forces. When both forces are directed to

alexgriva [62]

Answer:

The magnitude of force on P is 2.75 N

The magnitude of force on Q is 7.15 N

Solution:

As per the question:

Mass of the object, M = 11.0 kg

Acceleration of the object when the forces are directed leftwards, a = $0.900 m/s^{2}$

Acceleration when the forces are in opposite direction, a' = $0.400 m/s^{2}$

Now,

The net force on the object in first case is given by:

$F_{net} = |\vec{F_{P}}| + |\vec{F_{Q}}| = Ma$ (1)

The net force on the object in second case is given by:

$F_{net} = |\vec{F_{P}}| - |\vec{F_{Q}}| = Ma'$ (2)

Adding both eqn (1) and (2):

$2|\vec{F_{Q}}| = M(a + a')$

$|\vec{F_{Q}}| = \frac{11.0(0.900 + 0.400)}{2} = 7.15 N$

Putting the above value in eqn (1):

$|\vec{F_{P}}| = 11\times 0.900 - |\vec{F_{Q}}|$

$|\vec{F_{P}}| = 9.900 - 7.15 = 2.75$

6 0

4 years ago

Do only number 5 and thank

Naddik [55]

Answer:

Quantity of charge = 1800 Coulombs

Explanation:

Given the following data;

Current = 1 A

Time = 0.5 hours

Conversion:

1 hour = 60 * 60 = 3600 seconds

0.5 hour = 0.5 * 3600 = 1800 seconds

To find the charge passing through the wire;

Mathematically, the quantity of charge passing through a conductor is given by the formula;

Quantity of charge = current * time

Substituting into the formula, we have;

Quantity of charge = 1 * 1800

Quantity of charge = 1800 Coulombs

8 0

3 years ago

If the total momentum of a system of an old woman pushing a shopping cart is 450 kg×m/s, both with a velocity of 3 m/s, and the

Liono4ka [1.6K]

Answer:

100kg

Explanation:

Momentum is defined as the product of mass times velocity:

$p=mv$

The total momentum M must be equal to the sum of momentums of the system components, in this case the momentum of the lady plus the momentum of the cart:

$M=m_{woman}v_{woman}+m_{cart}v_{cart}$

since both the woman and the shopping cart have the same velocity:

$v_{woman}=v_{cart}=v$

the equation becomes:

$M=m_{woman}v+m_{cart}v\\M=v(m_{woman}+m_{cart})$

and since we need the mass of the cart we solve for $m{cart}$ :

$m_{woman}+m_{cart}=\frac{M}{v} \\\\m_{cart}=\frac{M}{v} -m_{woman}$

the values given by the problem are the following:

total momentum: $M=450kgm/s$

mass of the woman: $m_{woman}=50kg$

velocity: $v=3m/s$

we substitute all of them in the equation to find the mass of the shopping cart:

$m_{cart}=\frac{450kgm/s}{3m/s} -50kg\\\\m_{cart}=150kg-50kg\\\\m_{cart}=100kg$

the mass of the cart is 100kg.

7 0

3 years ago

What is focusing<br>Help me please

sveticcg [70]

Focusing means you’re paying particular attention to something

4 0

3 years ago

Energy transmitted by will feel warm

slava [35]

Energy transmitted by heat will feel warm

8 0

4 years ago