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bazaltina [42]
2 years ago
9

Help !!!!!!!!Please its Urgent.​

Physics
1 answer:
Wewaii [24]2 years ago
6 0

None can.

A clinical thermometer only measures temperatures above +30°C.

Mercury and alcohol are both frozen solid at -50°C.

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Please help!! i need the answers to both!!!
Allisa [31]

Answer and Explanation:

1. Evidence can be observed that light is energy-consuming because the liquid crystal sheet sets the temperature and gets warmer. With this, we can affirm that the light energy, moved the liquid crystal sheet molecules, making them when they move generate heat.

2. The evidence that light loads energy can be seen through the movement of the toy. This is because the light states that there was energy received, which will make all the gear of the toy work and move it.

6 0
2 years ago
Công thức tính quãng đường đi được của chuyển động thẳng biến đổi đều là:
Archy [21]

At time t = 0 the velocity is v1. Therefore C1 = v1 and C2 = x1. Equations (1), (2), (3), and (4) fully describe the motion of particles, or bodies experiencing rectilinear (straight-line) motion, where acceleration a is constant.

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3 years ago
Two people use a ramp to move a heavy box on to a truck. The box weighs 750 N the mechanical advantage of the ramp is 4. How muc
andreyandreev [35.5K]

Answer:

The amount of effort needed to move the box is 187.5 N

Explanation:

weight of the box = load moved by the ramp, L = 750 N

mechanical advantage of the ramp, MA = 4

effort needed to move the box, E = ?

Mechanical advantage is given as = Load / Effort

Effort = Load / Mechanical advantage

Effort = 750 / 4

Effort = 187.5 N

Therefore, the amount of effort needed to move the box on to the truck using a ramp is 187.5 N

5 0
3 years ago
Devin decides to start a summer job mowing lawns. In his first job, he pushes his lawn mower a total of 1.5 km. The lawn mower w
Xelga [282]

Answer:

1.13\cdot 10^5 J

Explanation:

The amount of work done by Devin when moving the lawn is given by:

W=Fd cos \theta

where

F is the average force applied

d is the displacement of the lawn

\theta is the angle between the direction of the force and the displacement

Assuming that Devin moves the lawn by applying a force parallel to the displacement, we have:

F = 75 N

d = 1.5 km = 1500 m

\theta=0^{\circ}

Therefore, the work done is

W=(75 N)(1500 m)(cos 0^{\circ})=1.13\cdot 10^5 J

5 0
3 years ago
PLEASE HELP ME ASAP!!
elena-s [515]

Answer:

3

Explanation:

3 because I know.

5 stars? <3

8 0
2 years ago
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