A straight ladder should extend at least 3 feet above the work surface or landing for safe access to and from the ladder. This helps provide stability and a secure handhold when climbing up or down.
The surface feature above the mantle plume is known as the "hotspot".
a plant stands up straight because it is reaching to the light source which is usually straight above it. it will bend to the light if the source is not above it
None of the above. A crack in the Earth's surface is called a fissure or a fault.
The epicenter of an earthquake is directly above the focus or hypocenter, which is the point where the seismic waves originate within the Earth. It is typically located on the Earth's surface directly vertically above the focus.
The prop roots of the red mangrove can help to accumulate sediment buildup. These roots extend above the water surface and trap sediment as the tide flows in and out, leading to the accumulation of sediments around the tree's base.
1 metres
From the US OSHA Construction standards:1926.1053(b)(1)When portable ladders are used for access to an upper landing surface, the ladder side rails shall extend at least 3 feet (.9 m) above the upper landing surface to which the ladder is used to gain access; or, when such an extension is not possible because of the ladder's length, then the ladder shall be secured at its top to a rigid support that will not deflect, and a grasping device, such as a grabrail, shall be provided to assist employees in mounting and dismounting the ladder. In no case shall the extension be such that ladder deflection under a load would, by itself, cause the ladder to slip off its support.
To safely access the roof using a ladder extension, make sure the ladder is long enough to reach the roof and is securely placed on a stable surface. Extend the ladder at least 3 feet above the roof edge for stability. Use proper ladder safety techniques, such as maintaining three points of contact and facing the ladder while climbing. Have someone hold the ladder at the base for added stability.
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30 feet above sea level and 50 feet above earths surface... science homework these days
30 feet above sea level and 50 feet above earths surface... science homework these days
Assuming it is a two section ladder then it must therefore have a minimum length of 28 feet.
To safely climb a ladder to access your roof, make sure the ladder is on a stable surface and is at the correct angle (about 75 degrees). Always face the ladder and use three points of contact (two hands and one foot or two feet and one hand) while climbing. Do not lean too far to the side and avoid carrying heavy items while climbing. Use a ladder that is tall enough to extend at least 3 feet above the roof edge for easy access.
The troposphere extends approximately 7-17 kilometers (4-10 miles) above the Earth's surface, depending on the location and season.
The stratosphere's upper limit is about 20 miles above sea level.
To safely put a ladder on a sloped roof, use a ladder stabilizer or standoff to keep the ladder stable and prevent it from slipping. Make sure the ladder is long enough to extend at least 3 feet above the roof edge for proper support. Position the ladder at the correct angle, with the base of the ladder 1 foot away from the wall for every 4 feet of ladder height. Always have someone hold the ladder while you climb for added safety.
No, the Earth's atmosphere extends much higher than 1 kilometer above its surface. The exosphere, the outermost layer of the atmosphere, extends up to 10,000 kilometers above the Earth's surface.