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riadik2000 [5.3K]
3 years ago
13

During a biology lab, students use a small knife called a scalpel to examine a large cricket. One student is accidentally cut by

the scalpel. Which steps must be taken to ensure this student’s safety? quickly yelling to the lab instructor putting on gloves before treating the cut using disinfectant on the cut applying a bandage immediately calmly telling the lab instructor washing hands after treating the cut scalpel safety rules scalpel use in lab how to use a scalpel safely how to use a scalpel correctly handling sharp objects sharp instrument safety sharp object safety rules safe handling and disposal of sharps policy Report inappropriate predictions
Physics
2 answers:
trasher [3.6K]3 years ago
3 0
All except the first one. I just took the test.
sesenic [268]3 years ago
3 0

I just took this test and it is all of them except the following:

quickly yelling to the lab instructor

applying a bandage immediately



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A 480N sphere 40.0cm in radius rolls without slipping 1200cm down a ramp that is inclined at 53 0 with the horizontal. What is t
IgorC [24]

As we know that sphere roll without slipping so there is no loss of energy in this case

so here we can say that total energy is conserved

Initial Kinetic energy + initial potential energy = final kinetic energy + final potential energy

\frac{1}{2}mv_i^2 + mgh = \frac{1}{2}mv^2 + \frac{1}{2}I\omega^2+ mgh'

as we know that ball start from rest

v_i = 0

height of the ball initially is given as

h = Lsin\theta

h = 1200sin53 = 960 cm

also we know that

I = \frac{2}{5}mR^2

also for pure rolling

v = r\omega

also we know that

480 = m*9.8

m = 49 kg

now plug in all data in above equation

480*9.60 + 0 = \frac{1}{2}*49*(0.40*\omega)^2 + \frac{1}{2}*\frac{2}{5}*49*(0.40)^2\omega^2 + 0

4608 = 3.92\omega^2 + 1.568\omega^2

\omega^2 = 839.65

\omega = 29 rad/s

So speed at the bottom of the inclined plane will be 29 rad/s

7 0
4 years ago
A steam engine has been measured to produce 8.6x107 J of work. How long does it take this engine to produce 19,000 W of power?
Sedbober [7]

Answer:

bueno lo siguiente es que yo no sé inglés

6 0
3 years ago
I need help with this​
insens350 [35]

Answer:

distance = 32 kilometers

displacement = 0 kilometers

Explanation:

they traveled 15 km to and back which would mean the distance they traveled is 32 km. but the displacement would still be 0 because their starting and ending points are the same.

7 0
3 years ago
Question 1 (5 points)
Elza [17]

Answer:

Velocity

Explanation:

Velocity is a speed with a direction.

7 0
3 years ago
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 17.3 m/s directly upward.
elena-s [515]

Answer:

h=15.27m

Explanation:

Since at maximum height the vertical velocity must be null it's better to use the formula:

v_f^2=v_i^2+2ad

We will use this formula for the vertical direction, choosing the upward direction as the positive one, so we have:

0=v_i^2+2ah

or

h=-\frac{v_i^2}{2a}

which for our values is:

h=-\frac{(17.3m/s)^2}{2(-9.8m/s^2)}=15.27m

7 0
3 years ago
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