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Ilia_Sergeevich [38]

1 year ago

5

To overcome an object's inertia, it must be acted upon by __________. A. gravity B. energy C. force D. acceleration

2 answers:

astra-53 [7]1 year ago

7 0

In order to overcome an object’s inertia (resistance to change), it must be acted upon by an unbalanced force, so the answer to the problem is letter C.

Jlenok [28]1 year ago

4 0

According to Newton's first law, the law of inertia, an object's velocity will not change unless it is acted upon by an outside force. This means that objects at rest tend to stay at rest, and objects in motion tend to stay in motion.

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a student moves a box across the floor by exerting 23.3 N of force and doing 47.2 J of work on the box. How far does the student

kozerog [31]

Work = Force x Distance
47.2J = 23.3N x d
d = 47.2/23.3
d = 2.0258 m

hope this helps :P

8 0

1 year ago

A large crate sits on the floor of a warehouse. Paul and Bob apply constant horizontal forces to the crate. The force applied by

Delicious77 [7]

Answer:

W = -510.98J

Explanation:

Force = 43N, 61° SW

Displacement = 12m, 22° NE

Work done is given as:

W = F*d*cosA

where A = angle between force and displacement.

Angle between force and displacement, A = 61 + 90 + 22 = 172°

W = 43 * 12 * cos172

W = -510.98J

The negative sign shows that the work done is in the opposite direction of the force applied to it.

6 0

1 year ago

What is the net torque on the bar shown in (Figure 1) about the axis indicated by the dot? Suppose that F=6.0N

AysviL [449]

Answer:

net torque on the system is 2.5 Nm

Explanation:

As we know that net torque on the system is given as

$\tau = r_1F_1 - r_2F_2$

now we have

$r_1 = 75 cm$

$F_1 = 6 N$

$r_2 = 25 cm$

$F_2 = 8 N$

now we have

$\tau = 0.75 (6) - 0.25(8)$

$\tau = 2.5 Nm$

6 0

1 year ago

Which of the following statements about horizons is true?

nalin [4]

<span>All soils have completely different horizon patterns.</span>

6 0

1 year ago

Read 2 more answers

Hippos spend much of their lives in water, but amazingly, they don’t swim. manatees, They have, like little very body fat. The d

kenny6666 [7]

Answer:

428.59 N

Explanation:

Buoyant force, $B=Vg\rho$ where V is volume, g is gravitational constant and \rho is density

$B+F_{upward}=mg$ where $F_{upward}$ is upward force

$Vg\rho_{w}+F_{upward}=mg$

$F_{upward}=mg- Vg\rho_{w}$

$F_{upward}=g(mg- V\rho_{w})=g(m-m\frac {\rho_{w}{\rho_{hippo}}$ where $\rho_{hippo}$ is the density of hippo

$F_{upward}=mg(1-\frac {\rho_{w}}{\rho_{hippo}})$

Using g as 9.81

$F_{upward}=1500*9.81*(1-1000/1030)= 428.5922 N$

Therefore, the upward force=428.59 N

3 0

1 year ago