Can you please look into it? Sometimes, when we lack the time, we ask someone else to look into a problematic situation for us. Both of the given sentences — “Can you please look into it?” and “Please look into it” — are ways of asking for someone’s help with the investigation. Both use the […]
Does smoking change sperm DNA?
Does smoking change sperm DNA? How does smoking affect sperm? Men who smoke have decreased sperm concentration, decreased motility (how sperm swim), fewer normally shaped sperm, and increased sperm DNA damage. Do cigarettes alter your DNA? While we’ve long known that smoking is linked to cancer, this new research allows scientists to quantify the molecular […]
Does oxygen have a fixed shape?
Does oxygen have a fixed shape? The state that a given substance exhibits is also a physical property. Some substances exist as gases at room temperature (oxygen and carbon dioxide), while others, like water and mercury metal, exist as liquids. (a) Solid O2 has a fixed volume and shape, and the molecules are packed tightly […]
Which direction is relative to magnetic field?
Which direction is relative to magnetic field? The direction of the force due to a magnetic field is perpendicular to the direction of motion. distance away from the wire, and is called the permeability of free space. Magnetic fields are measured in Teslas(T). Why are iron atoms affected by magnetic fields? Iron atoms are ferromagnetic […]
Which swimmer has the greatest speed?
Which swimmer has the greatest speed? Olympic gold-medalist Michael Phelps can swim the 200-meter freestyle in approximately 1.42 minutes, which equates to a speed of about 4.7 mph (miles per hour) or 7.6 km/h (kilometers per hour). A sailfish could cover 200 meters in about 10 seconds! How fast is a swimmer? about 2 miles […]
Does melting point increase across a period?
Does melting point increase across a period? Melting and boiling points increase across the three metals because of the increasing strength of their metallic bonds. The number of electrons which each atom can contribute to the delocalized “sea of electrons” increases. The atoms also get smaller and have more protons as you go from sodium […]
How does burning fossil fuels cause air pollution?
How does burning fossil fuels cause air pollution? When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which contribute to the formation of smog and acid rain. Major sources of nitrogen oxide emissions include: Cars and trucks. Coal-fired power plants. What are the biggest contributors to pollution? Human activities are responsible for […]
How heat energy is transformed into another form?
How heat energy is transformed into another form? In a thermal power station, heat energy converted into electrical energy. Sun gives light so light energy is converted into solar energy this is also one type of heat energy because heat energy is converted into solar energy. What can heat be transformed into? Thermoelectric materials can […]
How will you increase the measure of temperature in an object?
How will you increase the measure of temperature in an object? All particles are moving and have kinetic energy…. Actions that Increase Thermal Energy Explanation Raise the temperature of the object Increases the kinetic energy of the atoms or molecules Pull atoms or molecules that attract one another farther apart Increases the potential energy of […]
What do u mean by runoff?
What do u mean by runoff? noun. something that drains or flows off, as rain that flows off from the land in streams. What is difference between runoff and streamflow? Streamflow, or channel runoff, is the flow of water in streams, rivers, and other channels, and is a major element of the water cycle. It […]