Which of the following is equivalent to 2.5 meters

a) 0.0025 hectometers

b) 0.0025 kilometers

c) 25 centimeters

d) 25 millimeters

Which of these instruments is listed with the wrong type of lens that it uses? •telescope, convex •camera, convex •flashlight, concave •microscope, concave

Earth revolves on its own axis. true false

As air is pumped from the vacuum jar the sound level of the ringing bell will decrease until it can no longer be heard.

What is a compound? a poly element pure substance a homogenous mixture a single element pure substance a heterogeneous mixture

Which is a "big idea" for matter and change 1.) atoms are building blocks of all things 2.) the laws of nature have all been discovered 3.) forces cause changes in motion 4.) the universe is very old and large

An object is moving but we don't know its mass or velocity. A force of 20 newtons to the right is exerted on the object for 20 seconds. What is the (vector) change in linear momentum for the body as a result of this impulse?

Which friction-reducing technologies are used in the Variable Compression Turbo Engine?

A quadraphonic car stereo operates on electric current provided by the car's 12V battery and is connected in series. Each channel of the stereo, which feeds the electrical signal to one of the stereo's four speakers, has a resistance of 4.1 oums.

A cement block accidentally falls from rest from the ledge of a 15.0m high building. When the block is 14.0m above the ground, a man who is 1.71m tall looks up and notices that the block is directly above him.

a cricket ball is thrown vertically upward with an intial velocity of 4ms-1 find. a. Its velocity after three second. b. maximum height attained and the time taken to reach it