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3 years ago

What are the units for speed? O A. km/s2 O B. m/s2 O C. m/s2 O D. m/s

Physics

2 answers:

Masteriza [31]3 years ago

6 0

Answer: D

Explanation: metres per second (m/s)

Alenkinab [10]3 years ago

4 0

Answer:

Explanation:

The only one that doesn't have a time unit that is squared is the one that is a label for speed or velocity. Acceleration has a label with the time unit squared, like m/s/s. Choice D is the only unit for speed/velocity.

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What is the density of an object that has a mass of 10 g and a volume

Korolek [52]

2g/mL

Explanation:

Given parameters :

Mass = 10g

Volume = 5mL

Unknown:

Density of the object = ?

Solution:

Density is defined as the mass per unit volume of a body.

Density = $\frac{mass}{Volume}$

Now, input the values in the equation:

Density = $\frac{10}{5}$ = 2g/mL

Learn more:

Density brainly.com/question/5055270

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3 years ago

According to the Creative Curriculum model, the _____ sets the context for teaching and learning

vladimir2022 [97]

Answer:

A. structure of the classroom

Explanation:

According to the Creative Curriculum model, the _ structure of the classroom_ sets the context for teaching and learning.

In creative curriculum model children learn through creative and active learning strategy. Creative curriculum are implemented through structure of classrooms. Creative curriculum stands to enhance skill of the the students and inculcate in them passion for learning.

3 0

3 years ago

Assume the acceleration of the object is a(t) = −32 feet per second per second. (Neglect air resistance.) With what initial velo

alukav5142 [94]

Answer:

$v_i=189.315ft/s$

Explanation:

We are going to use the accelerated motion formula $v_f^2=v_i^2+2ad$ on the vertical component taking the upwards direction as positive.

Since <em>at maximum height the speed will be $v_f=0m/s$ </em>, the formula can be written as $v_i=\sqrt{-2ad}$ , which for our values is:

$v_i=\sqrt{-2(-32ft/s^2)(560ft)}=189.314553059ft/s=189.315ft/s$

Written to three decimal places.

3 0

3 years ago

A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.15 is. How much longer should t

max2010maxim [7]

Answer:

ΔL=0.14m

Explanation:

The period of oscillations of simple pendulum is

$T=2\pi \sqrt{\frac{L}{g} } \\$

Here L is length of pendulum and g is acceleration due to gravity

So the length of pendulum is:

$L=\frac{T^{2}g }{4 \pi^{2} }\\$

So increase in length is:

ΔL=L₂-L₁

$=\frac{T_{2}^{2}g }{4 \pi^{2} }-\frac{T_{1}^{2}g }{4 \pi^{2} }\\=\frac{g}{4 \pi^{2} }[T_2^{2} -T_1^{2} ]\\ =\frac{9.8}{4 \pi^{2}}[(1.15+0.22)^{2}-(1.15)^{2} ] \\=0.14m$

ΔL=0.14m

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3 years ago

What is activated by the sympathetic system?

Vesna [10]

Answer:

1 the digestive system thats all

8 0

2 years ago